(3y+7)=8-2(8-y) -2(2-5x)=2(x-3)-5 4x-2(x+7)=2(3-x) 1,24x+3,46=1,76x+6,58 -4,92y-(0,08y+5,12)=-0,88-y-(3y+7)=8-2(8-y) решите сделаю лудшим
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Ответы на вопрос:
(3y+7)=8-2(8-y) -3y-7=8-16+2y -3y+2y=8-16+7 -5y=-1 y=5 -2(2-5x)=2(x-3)-5 -4-10x=2x-6-5 -10x-2x=-6-5+4 -12x=-7 x=1.71 4x-2(x+7)=2(3-x) 4x-2x-14=6-3x 4x-2x+3x=6+14 5x=20 x=20\5 x=4 1.24x+3.46=1.76x+6.58 1.24x-1.76x=6.58-3.46 -0.52x=3.12 x= 3.12\-0.52 x=-6 -4.92y-(0.08y+5.12)=-0.88-y-(3y+7)=8-2(8-y) -4.92y-0.08y-5.12=-0.88-y-3-7=8-16-8y -4.92y-0.08y+y +8y=8-16+5.12+0.88+3+7 4y=8 y=8\4 y1\2=0.5
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