Решите уравнения 8b+55=167 7y+9-5y=13

Question

Решите уравнения

8b+55=167

7y+9-5y=13

Answer 1

8b=167-55                    

8b=112

b=112/8

b=14

Answer 2

8b + 55 = 167

8b = 167-55

8b = 112

b = 112 : 8

b = 14

 

7y + 9 - 5y = 13

2y + 9 = 13

2y = 13 - 9

2y = 4

y = 4:2

y = 2