Question

A) 4(x-3)=2(x+6) B) 5(-x+3)=2(x+6) C) 13-4(x-7)-8=-2(x+5) D) 7(-x+2)=-9(x-3)-21​

Answer 1

A) 4(x-3) = 2(x+6)

4x - 12 = 2x + 12

4x - 2x = 12 + 12

2x = 24

x = 24/2

x = 12

B) 5(-x+3) = 2(x+6)

- 5x + 15 = 2x + 12

- 5x - 2x = 12 - 15

- 7x = - 3  *(-1)

7x = 3

x = 3/7

C) 13 - 4(x-7) -8 = -2(x+5)

13 - 4x + 28 - 8 = - 2x - 10

- 4x + 2x = - 10 - 13 - 28 + 8

- 2x = - 51 + 8

- 2x = - 43  *(-1)

2x = 43

x = 43/2

D) 7(-x+2) = -9(x-3) - 21

- 7x + 14 = - 9x + 27 - 21

- 7x + 9x = 27 - 21 - 14

2x = ​- 8

x = - 8/2

x = - 4