Х-(70-52)=49. а+(18+19)=90

Question

Х-(70-52)=49.
а+(18+19)=90

Answer 1

1) x-(70-52)=49
x = 49+(70-52)
x = 67
 Отв: 67
2) a+(18+19)=90
a = 90-(18+19)
a = 53
Отв: 53