1)3(k-2p)-5(2k-p)+(k-3p); 2)7(a-2b)+11(b-a)-(2a+3b); 3)a(x-2)-x(3-a)+5(a-x); 4)2b(y+3)-2y(1-3b)-(b-3y)
Срочно помогите!Пожалуйста!Очень надо!)
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