Question

Can someone help me how to write the equations of this three problems?

Answer 1

Number 11:

(356-50) ÷ 17 = x

Answer 2

11.    50 +17x = 356    where x = number of months

17x = 306

x =306 / 17  = 18 months answer

12.   3x + 21 = 60

3x = 39   x = $13 answer

13.    15(x - 20) =  375

15x  - 300 = 375

15x = 675

x = $45  answer