15–(3х–3)=5–4х; 2(х–0.5)+1=9
15-3х+3=5-4х 4х-3х=5-15-3 х= - 13 2х - 1+1=9 2х=1-1+9 2х=9 х=9/2 х=4.5
15-3х+3=5-4х -3х+4х=5-15-3 1х=-13 Х=(-13):1 Х=-13