Решите уравнение: 1.1-2 2\1=5\3x; 6.75x=2 4\1x-9; 16-9 2\1y=3y+21; 1 4\1y+7.5=5y; 0.5x-7=-3\2x; 6y-2 5\4=2.5y.
4(1-х) = 3(2х+3) 4-4х = 6х+9 -4х-6х=9-4 -10х=5\(-10) х= -0,5 12х-(7-3х)=4х 12х - 7 + 3х = 4х 12х + 3х - 4х = 7 11х = 7\11 х= 7\11 8х + 3 = 1-(2х+4) 8х+3=1-2х-4 8х+2х=-4+1-3 10х=-9 х= -0,9