Question

1. 5x + 4 = x + 12
2. 13 – 5y = 8 – 2y
3. 5x + (3x – 7) = 9
4. 3y – (5 – y) = 11
5. (7a + 1) – ( 6a + 3) = 5
6. (8s + 11) – 13 = 9s– 5
7. (5x – 3)+(7x – 4) = 8 – (15 – 11x)
8. (7 – 5k) – (8 – 4k) + (5k + 6) = 8
9. 2x + 5 = 2(x + 1) + 11
10. 15(v + 2) – 30 = 15v
11. 5(3x + 1,2) + x = 6,8
12. 0,4b + 3 = 0,2(3b + 1) – b
13. 6(x – 1) = 9,4 – 1,7x
14. 3,5 – 9a = 2(0,5a – 4)
15. 3(2,4 – 1,1m) = 2,7m + 3,2
16. 3(x – 1) = 2(2 – x) + 6
17. 4(3 – h) – 11 = 7(2h– 5)
18. –3(3y + 4) + 4(2y – 1) = 0
19. 0,3(5x – 7) = 3(0,2x + 3,2)
20. 4(1,2b + 3,7) – 2,8 = 5,2b
21. 0,9(4y – 2) = 0,5(3y – 4) + 4,4
22. 4(0,2x – 7) – 5(0,3x + 6) = 5
1. 8x – 5 = x – 40
2. 9 + 13y = 35 + 26y
3. 6s+ (3s – 2) = 14
4. 8y – (7y – 142) = 51
5. (6x + 1) – (3 – 2x) = 14
6. (6 – 2c) + 4 = – 5c – 3
7. (10x–3) + (14x–4) = 8 – (15 – 22x)
8. (7–10k) – (8–8k) + (10k + 6) = – 8
9. 6y – 20 = 2(5y – 10) – 4y
10. 6(1 + 5v) = 5(1 + 6v)
11. 4(x + 3,6) = 3x – 1,4
12. 3,4 – 0,6b= 2b – (0,4b+ 1)
13. – 3(y + 2,5) = 6,9 – 4,2y
14. 0,5y + 7 = 5(0,2 + 1,5y)
15. 4(x – 0,8) = 3,8x – 5,8
16. 4(1 – 0,5a) = – 2(3 + 2a)
17. 2(h – 3) = 3(4 – h) + 5
18. 3x + 2(2x – 3) = 8 – 7(x + 2)
19. 0,7(5z – 3) = 5(0,1 + 0,5z)
20. 4(3 – 2x) + 24 = 2(3 + 2x)
21. 0,2(5y – 2) = 0,3(2y –1) – 0,9
22. 3(0,4x + 7) – 4(0,8x – 3) = 2
1. 1,3p – 11 = 0,8p + 5
2. 0,71x – 13 = 10 – 0,29x
3. 8c + 0,73 = 4,61 – 8c
4. 13 – (5x + 11) = 6x
5. 2 = (3x – 5) – (7 – 4x)
6. 8x + 5 = 119 + (7 – 3x)
7. (4y + 3) – (10y + 11) = 7 + (13 – 4y)
8. (3 – 2x) + (4 – 3x) + (5–5x) = 12 + 7x
9. 3y – (y – 19) = 2y
10. 3y + (y – 2) = 2(2y – 1)
11. 13 – 4,5a = 2(3,7 – 0,5a)
12. 0,8x – (0,7x + 0,36) = 7,1
13. 7(x – 8,2) = 3x + 19
14. 0,2(5x – 6) + 2x = 0,8
15. – (7y + 0,6) = 3,6 – y
16. 5(x + 2) = 4(3 – x) + 7
17. – 3(5 – 2x) + 4x = 5(x – 3) + 27
18. 0,4(6x – 7) = 0,5(3x + 7)
19. 7(1,4y + 1,8) – 27,6 = 10,1y
20. 3(5 – x) + 13 = 4(3x – 8)
21. 0,7(6y – 5) = 0,4(y – 3) – 1,16
22. – 7(0,3x – 8) + 3( 0,4x + 5) = 8
1. 0,3p – 5 = 6 – 0,7p
2. 9c + 2,65 = 36,85 – 9c
3. 5 = – 1 – (3 – 9x)
4. – 9 – (8x – 11) = 12
5. 12 = (7x – 9) – (11 – x)
6. 11x + 103 = 1 + (12x – 31)
7. (2x + 3) – (5x + 11) = 7 + (13 – 2x)
8. (2x + 3) + (3x + 4) + (5x + 5)=12 –7x
9. 6x = 1 – (4 – 6x)
10. 6y – (y – 4) = 4 + 5y
11. 5,6 – 7y = – 4(2y – 0,9) + 2,4
12. x – 0,5 = 2(0,3x – 0,2)
13. 3(2,5 – 2x) = 13,5 – 14x
14. 0,6y – 1,5 = 0,3(y – 4)
15. 0,5(4 – 2a) = a – 1,8
16. 7(3 + x) = 2(x – 5) + 8
17. – 0,2(5 – 0,7x) + 0,02 = 1,4(x – 1,6)
18. 1,2(3b + 5) = 2(2,4b – 3,6)
19. 3,2(5x – 1) = 3,6x – 9,4
20. 8(0,7x – 4) – 2(0,2x – 3) = – 39
21. – 3(2,1z – 4) – 4,2 = 1,2(– 5z + 0,5)
22. 6,4(2 – 3y) = 6(0,8y – 1) + 6,8

Answer 1

1. 5x + 4 = x + 12
5х-х=12-4
4х=8
Х=8:4
Х=2
2. 13 – 5y = 8 – 2y
2у-5у=8-13
-3у=-5
У=-5:(-3)
У=1 2/3
3. 5x + (3x – 7) = 9
5х+3х-7=9
5х+3х=9+7
8х=16
Х=16:8
Х=2
4. 3y – (5 – y) = 11
3у-5+у=11
3у+у=11+5
4у=16
У=16:4
У=4
5. (7a + 1) – ( 6a + 3) = 5
7а+1-6а-3=5
7а-6а=5+3-1
А=7
6. (8s + 11) – 13 = 9s– 5
8s+11-13=9s-5
8s-9s=-5-11
-s=-16
S=16
7. (5x – 3)+(7x – 4) = 8 – (15 – 11x)
5x-3+7х-4=8-15+11х
5х+7х-11х=8-15+4+3
Х=0
8. (7 – 5k) – (8 – 4k) + (5k + 6) = 8
7-5к-8+4к+5к+6=8
5к-5к+4к=8-6+8-7
4к=3
К=3:4
К=0,75
9. 2x + 5 = 2(x + 1) + 11
2х+5=2х+2+11
2х-2х=2+11-5
0х=8
Х=решений нет
10. 15(v + 2) – 30 = 15v
15v+30-30=15v
15v-15v=30-30
0v=0
V=решений нет
11. 5(3x + 1,2) + x = 6,8
15х+6+х=6,8
15х+х=6,8-6
16х=0,8
Х=0,8:16
Х=0,05
12. 0,4b + 3 = 0,2(3b + 1) – b
0,4b-0,6b+b=0,2-3
0,2b=-2,8
B=-2,8:0,2
B=-14
13. 6(x – 1) = 9,4 – 1,7x
6х-6=9,4-1,7х
6х+1,7х=9,4+6
7,7х=15,4
Х=15,4:7,7
Х=2
14. 3,5 – 9a = 2(0,5a – 4)
-9а-а=-8-3,5
-10а=11,5
А=11,5:(-10)
А=-1,15
15. 3(2,4 – 1,1m) = 2,7m + 3,2
7,2-3,3m=2,7m+3,2
-3,3m-2,7m=3,2-7,2
-6m=-4
M=-4:(-6)
M=2/3
16. 3(x – 1) = 2(2 – x) + 6
3х-3=4-2х+6
3х+2х=4+6+3
5х=13
Х=13:5
Х=2,6
17. 4(3 – h) – 11 = 7(2h– 5)
12-4h-11=14h-35
-4h-14h=11-35-12
-18h=-36
H=-36:(-18)
H=2
18. –3(3y + 4) + 4(2y – 1) = 0
-9у-12+8у-4=0
-9у+8у=4+12
-у=16
У=-16
19. 0,3(5x – 7) = 3(0,2x + 3,2)
1,5х-2,1=0,6х+9,6
1,5х-0,6х=9,6+2,1
0,9х=11,7
Х=11,7:0,9
Х=13
20. 4(1,2b + 3,7) – 2,8 = 5,2b
4,8b+14,8-2,8=5,2b
4,8b-5,2b=2,8-14,8
0,4b=-12
B=-12:0,4
B=-30
21. 0,9(4y – 2) = 0,5(3y – 4) + 4,4
3,6у-1,8=1,5у-2+4,4
3,6у-1,5у=4,4-2+1,8
2,1у=4,2
У=4,2:2,1
У=2
22. 4(0,2x – 7) – 5(0,3x + 6) = 5
0,8х-28-1,5х-30=5
0,8х-1,5х=5+30+28
-0,7х=63
Х=63:(-0,7)
Х=-90