Question

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

Answer 1

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

Answer 2

Number 11:

(356-50) ÷ 17 = x