Question

Укажите верное равенство:
(m+7)2=m+14
11(x-10=11x-110
(15+y)3=45+y
5(12-c)=60+5c

Answer 1

(m+7)2=m+14
m+14=m+14

11(x-10)=11x-110
11x-110=11x-110

(15+y)3=45+y
45+3y=45+y

5(12-c)=60+5c
60-5c=60+5c