Question

B)7.(2+x)=34+5.(x-12)

C)3.(x+1)-2.(x-1)=-(x+5)

Answer 1

a)

$14 + 7x = 34 + 5x - 60 \\ 14 + 7x = - 26 + 5x \\ 7x - 5x = - 26 - 14 \\ 2x = - 40 \\ x = - 20$

b)

$3x + 3 - 2x + 2 = - x - 5 \\ x + 5 = - x - 5 \\ x + x = - 5 - 5 \\ 2x = - 10 \\ x = - 5$