X-3=10x +12 -2x-25=-5x-7 4(5-2y)=2(1-y) 3y +16 - вопрос №271075831012225574522131689411838 от Stanislava153 23.02.2021 22:21

Question

Математика: X-3=10x +12 -2x-25=-5x-7 4(5-2y)=2(1-y) 3y +16 =8y-9 4x +(11,8 -x )=3,8 -5x 3y +2(2y-3)=8-7(y-2) 2-5x=x+14 5(y-7)=3(y-4)-29 11-5y=12-6y

Stanislava153 · Answer

1)15х-3=10х+1215х-10х=12+35х=15х=32)-2х-25=-5х-7-2х+5х=-7+253х=18х=63)4(5-2y)=2(1-y)20-8y=2-2y-8y+2y=2-20-6y=-18y=34)3y+16=8y-93y-8y=-9-16-5y=-25y=55)4х+(11,8-х)=3,8-5х4х+11,8-х=3,8-5х4х+5х-х=3,8-11,88х=-8х=-16)3y +2(2y-3)=8-7(y-2)3у+4у-6=8-7у+143у+4у+7у=14+6+814у=28у=27)2-5x=x+14-5х-х=14-2-6х=12х=-28)5(y-7)=3(y-4)-295у-35=3у-14-295у-3у=-14-29+352у=-8у=-49)11-5y=12-6y-5у+6у=12-1у=1...