упростите: x(c+1)+c(x-1) m(k-3)-k(m-5) b(2d-5)-b(d+5)

Question

упростите:

x(c+1)+c(x-1)

m(k-3)-k(m-5)

b(2d-5)-b(d+5)

Answer 1

хс+х+хс-с=2xc+x+c

mk-3m-km+5k=-3m+5k

2bd-5b-bd-5d=2bd