doar a si b va rog este urgent dau coroana

Răspuns:
a)3(x+3)+4(2x+1)=2(x-3)+3x+1
3x+9+8x+4=2x-6+3x+1
11x+13=5x-5
6x=-18 =>x=(-3)
b)5x-1-4(x+2)+24=2(3x-7)-4x
5x-1-4x-8+24=6x-14-4x
x+15=2x-14
-x=-29 =>x=29