Question

5(2x+1)=16
2(-x+4)=6
-3(x+2)=-12
2(x-1)=8

Answer 1

a) 5(2x + 1) = 16

10x + 5 = 16
10x = 16 - 5
10x = 11
x = $\frac{11}{10}$

b) 2(-x+4) = 6
- 2x + 8 = 6
- 2x = 6 - 8.(-1)
2x = - 6 + 8
2x = 2
x = $\frac{2}{2}$
x = 1

c) -3(x+2) = -12
- 3x - 6 = - 12
- 3x = - 12 + 6
- 3x = - 6 .(-1)
3x = 6
x = $\frac{6}{3}$
x = 2

d) 2(x-1) = 8
2x - 2 = 8
2x = 8 + 2
2x = 10
x = $\frac{10}{2}$
x = 5