Question

Вариант 32

1. 6x + 7 = 4x - 1

2. 6(4x + 3) = 5x - 1

3. 6(2x + 1) + 2x = 5x - 12

4. 3(5x - 2) - 7(3x + 4) = -24

5. 7x - 7(4x - 1) = 1 - 3(5x - 2)

6. 4,8(x - 3) + 1 = 2,4(2x + 3)

Answer 1

1)2x=-8
x=-4
2)24x+18=5x-1
21x=-19
x=-19/21
3)12x+6+2x=5x-12
9x=-18
x=-2
4)15x-6-21x-28=-24
-6x=10
x=-5/3
5)7x-28x+7=1-15x+6
-6x=0
x=0
6)4,8x-14,4+1=4,8x+7,2
x=бесконечность