3(1-2х)-2(3х-4)=(5-4х)

3(1 - 2х) - 2(3х - 4) = 5 - 4х 3 - 6х - 6х + 8 = 5 - 4х - 6х - 6х + 4х = 5 - 3 - 8 - 8х = - 6 х = - 6 : (- 8) х = 0,75 5(2х - 3) - 7(х - 2) + 7 = (3х - 5) + х 10х - 15 - 7х + 14 + 7 = 3х - 5 + х 10х - 7х - 3х - х = - 5 + 15 - 14 - 7 - х = - 11 х = 11 2(7 - х) - 3(4х - 5) - 8 = 7(3 - 2х) 14 - 2х - 12х + 15 - 8 = 21 - 14х - 2х - 12х + 14х = 21 - 14 - 15 + 8 0х = 0 х - любое число

1)3-6х-6х+8=5-4х 12х-4х=11-5 8х=6 х=6/8=3/4=0,75 2)5(2х-3)-7(х-2)+7=(3х-5)+х10х-15-7х+14+7=3х-5+х4х-3х=6+5х=113)2(7-х)-3(4х-5)-8=7(3-2х)14-2х-12х+15-8=21-14х0х=0х∈(-∞;∞)