Упростите b(m-7)-7b x(c+1)+c(x-1) y(x-4)+x(3-y)

Question

Упростите b(m-7)-7b x(c+1)+c(x-1) y(x-4)+x(3-y)

Answer 1

B(m-7)-7b=раскрываем скобки
bm-7b-7b=bm