1) 4х+5(3-2х)=5-11х 2) 19-2(3х+8)=2х-37 3) 8х+3(7-2х)=4х+3 4) 23-4(3х+8)=1-17х Решите уравнения) Пж!)..

1)4x+15-10x=5-11x 4x-10x+11x=5-15 5x=-10 x=-10:5 x=-2 2)19-2(3x+8)=2x-37 19-6x-16=2x-37 -6x-2x=-37+16-19 -8x=-40 x=-40:(-8) x=5 3)8x+3(7-2x)=4x+3 8x+21-6x=4x+3 8x-6x-4x=3-21 -2x=-18 x=-18:(-2) x=9 4)23-4(3x+8)=1-17x 23-12x-32=1-17x -12x+17x=1+32-23 5x=10 x=10:5 x=2