Question

a)2x=-7 b)3.(x+2)+5=x+1 c)x+4(x-1=9-2(x+3)

Answer 1

a)
2x = - 7 
x = - 7/2

b)
3.(x + 2) + 5 = x + 1 
3x + 6 + 5 = x + 1
3x + 11 = x + 1
3x - x = 1 - 11
2x = - 10
x = - 10/2
x = - 5

c)
x + 4(x - 1) = 9 - 2(x + 3)
x + 4x - 4 = 9 - 2x - 6
5x - 4 = 3 - 2x
- 4 - 3 = - 2x - 5x
- 7 = - 7x ( - 1)
7 = 7x
7x = 7
x = 7/7
x = 1