1. 259 – 3x = 190
2. 14x – 193 = 717
3. 24x + 217 = 529
4. (135 – 31x)2 = 22
5. 18(5x – 14) = 468
6. (241 + 139) * (2x - 247) = 20140
7. 3x: 43 = 3
8. 135: 5x = 3
Ответы
Ответ:
1. х=23
2. х=65
3. х=13
4. х=4
Пошаговое объяснение:
1. 259 – 3x = 190
-3х=190-259
-3х=-69
х=-69:(-3)
х=23
2. 14x – 193 = 717
14х=717+193
14х=910
х=910:14
х=65
3. 24x + 217 = 529
24х=529-217
24х=312
х=312:24
х=13
4. (135 – 31x)2 = 22
270-62х=22
-62х=22-270
-62х=-148
х=-148 : -62
х=4
Ответы:
1)259-3x=190. 2)14x-193=717
3x=259-190. 14x=717+193
3x=69. 14x=910
x=69:3. x=910:14
x=23 x=65
3)24x+217=529
24x=529-217
24x=312
x=312:24
x=13
4)(135-31x)2=22
135-31x=22:2
135-31x=11
31x=135-11
31x=124
x=124:31
x=4
5)18(5x-14)=468
5x-14=468:18
5x-14=26
5x=26+14
5x=40
x=40:5
x=8
6)(241+139)•(2x-247)=20140
380• (2x-247)=20140
2x-247=20140:380
2x-247=53
2x=53+247
2x=300
x=300:2
x=150
7)3x:43=3
3x=3•43
3x=129
x=129:3
x=43
8)135:5x=3
5x=135:3
5x=45
x=45:5
x=9