Question

6.Раскройте скобки : a) -2 ×(4+5m-7n).b)-2 × (-14 + z -25 c)

Answer 1

a) -2 ×(4+5m-7n)=-8-10m+14n
b)-2 × (-14 + z -25 c)=28-2z+50c

Answer 2

Спасибо

Answer 3

a) -2×(4+5m-7n) = -8-10m+14n
b) -2×(-14+z+25c) = 28-2z-50c