Пожалуйста помогите с 5,7 и 11
5) 3х+4=5х-6 2х=10 х=5 7) 2(3х+1)+2(4-х)=5(7х+2)-31х 6х+2+8-2х=35х+10-31х 6х-2х-4х=10-8-2 0=0 11)9-8х+7+6х-5=4х-3-2х+1 -8х+6х-4х+2х=1-9-7+5-3 -4х=-13 4х=13 х=3.25
5) 3х+4=5х-6 3х-5х=-6-4 -2х=-10 х=5 7) 2(3х+1)+2(4-х)=5(7х+2)-31х 6х+2+8-2х=35х+10-31х 6х-2х-35х+31х=10-2-8 0=0 11) 9-8х+7+6х-5=4х-3-2х+1 -8х+6х-4х+2х=1-3-9-7+5 -4х=-13 х=3,25