Question

ришите уравнение
(16m+5m)/18=7

(17n-8n)*13=351

Answer 1

1) (16m+5m)/18=7
21m=7*18
m=126/21
m=6
2)(17n-8n)*13=351
9n=351/13
9n=27
n=27/9
n=3