Question

Решите уравнения, (96-х)-15=64 и 31-(х+11)=18

Answer 1

(96-x)-15=64 96-x=64+15 96-x=79 96-79=17 ----------------------------- (96-17)-15=64 17=17 31-(x+11)=18 x+11=31+18 x+11=49 49-11=38 ---------------------- 31-(38+11)=18 38=38