Question

1) 85+48÷(11-х)=91
2) 286-49÷(2х-5)=79

1) (16m+5m)÷18=7
2) (17n-8n)×13=351

Answer 1

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