Упрости выражение:
5y-(y+2)-4*(y-7)+y
18+(a+9)-5*(a-2)+15a
4x-(x+2)-7*(x-1)-x
5y-(y+2)-4*(y-7)+y
18+(a+9)-5*(a-2)+15a
4x-(x+2)-7*(x-1)-x
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Answers & Comments
5y-(y+2)-4*(y-7)+y=5у-у-2-4у+28=4у-4у+26=26
18+(a+9)-5*(a-2)+15a=18+а+9-5а+10+15а=а-5а+15а+18+9+10=11а+37
4x-(x+2)-7*(x-1)-x=4х-х-2-7х+7-х=-5х+5=5-5х=5(1-х)