5x + (7.5+3x)=5x+2 -3x+7(2-3x)=-4x-5 -8x + 2(9+7x)=5x-10 - вопрос №47526945753523723458297510547444 от Marymol2005 28.10.2021 12:37

Question

Алгебра: 5x + (7.5+3x)=5x+2 -3x+7(2-3x)=-4x-5 -8x + 2(9+7x)=5x-10 5x+4(7+4x)=-4x+4

Marymol2005 · Answer

-5х + (7.5+3х)=5х+2-5х + 7.5+3х=5х+2-5х +3х -5х= 2-7.5-7х=-4.5х=4.5/7-3х+7(2-3х) = -4х-5-3х+14-21х=-4х-5-3х-21х+4х= -5-14-20х=-19х=0.95-8х+2(9+7х)=5х-10-8х+18+14х=5х-106х-5х= -28х=-285х+4(7+4х)=-4х+45х+28+16х=-4х+421х+4х=4-2825х=-24х=-0.96...