«Решение уравнений» А у меня «4» 1. (4 – х) + 2 (х – 3) = –13; 2. (2 – х) + 3 (х – 3) = –13; 3. 3 (5 –х) + 13 = 4 (3х – 8). 4. 2 (3 + 2х) = 4 (3 – 2х) + 24.

1. (4-х)+2 (х-3)=-13 4-х+2х-6=-13 4+2х-х-6=-13 4+х-6=-13 4-6+х=-13 -2+х=-13 х=-13+2 х=-11 2. (2-х)+3 (х-3)=-13 2-х+3х-9=-13 2+2х-9=-13 2-9+2х=-13 -7+2х=-13 х=-13+7/2 х=-3 3.3 (5-х)+13=4 (3х-8) 15-3х+13=12х-32 28+32=3х+12х 60=15х х=60/15 х=4 4. 2 (3+2х)=4 (3-2х)+24 6+4х=36-8х 8х+4х=36-6 12х=30 х=30/12 х=2,5