15–(3х–3)=5–4х 2(х–0.5)+1=9 | Х|=25
1) 15 - 3х + 3 = 5 - 4х 18 - 3х = 5 - 4х - 3х + 4х = 5 - 18 - х = - 13 х = 13 2) 2х - 1 + 1 = 9 2х = 9 х = 9 / 2 х = 4,5 3) / х / = 25 х = - 25; х = 25