When do two plans cost the same?

Write each plan as an equation and set the costs equal. Solve for the number of months.

1. Plan A has a joining fee of 43 dollars plus 3 dollars per month. Plan B has a joining fee of 36 dollars plus 4 dollars per month. After how many months do the two plans cost the same?
2. Plan A has a joining fee of 22 dollars plus 5 dollars per month. Plan B has a joining fee of 34 dollars plus 3 dollars per month. After how many months do the two plans cost the same?
3. Plan A has a joining fee of 34 dollars plus 8 dollars per month. Plan B has a joining fee of 44 dollars plus 7 dollars per month. After how many months do the two plans cost the same?
4. Plan A has a joining fee of 34 dollars plus 5 dollars per month. Plan B has a joining fee of 14 dollars plus 7 dollars per month. After how many months do the two plans cost the same?
5. Plan A has a joining fee of 21 dollars plus 9 dollars per month. Plan B has a joining fee of 41 dollars plus 5 dollars per month. After how many months do the two plans cost the same?
6. Plan A has a joining fee of 39 dollars plus 2 dollars per month. Plan B has a joining fee of 27 dollars plus 3 dollars per month. After how many months do the two plans cost the same?
7. Plan A has a joining fee of 47 dollars plus 5 dollars per month. Plan B has a joining fee of 56 dollars plus 2 dollars per month. After how many months do the two plans cost the same?
8. Plan A has a joining fee of 59 dollars plus 3 dollars per month. Plan B has a joining fee of 23 dollars plus 6 dollars per month. After how many months do the two plans cost the same?
9. Plan A has a joining fee of 12 dollars plus 5 dollars per month. Plan B has a joining fee of 27 dollars plus 4 dollars per month. After how many months do the two plans cost the same?
10. Plan A has a joining fee of 28 dollars plus 5 dollars per month. Plan B has a joining fee of 19 dollars plus 8 dollars per month. After how many months do the two plans cost the same?
11. Plan A has a joining fee of 20 dollars plus 3 dollars per month. Plan B has a joining fee of 6 dollars plus 4 dollars per month. After how many months do the two plans cost the same?
12. Plan A has a joining fee of 26 dollars plus 3 dollars per month. Plan B has a joining fee of 6 dollars plus 4 dollars per month. After how many months do the two plans cost the same?
13. Plan A has a joining fee of 45 dollars plus 7 dollars per month. Plan B has a joining fee of 57 dollars plus 4 dollars per month. After how many months do the two plans cost the same?
14. Plan A has a joining fee of 33 dollars plus 9 dollars per month. Plan B has a joining fee of 148 dollars plus 4 dollars per month. After how many months do the two plans cost the same?
15. Plan A has a joining fee of 32 dollars plus 6 dollars per month. Plan B has a joining fee of 9 dollars plus 7 dollars per month. After how many months do the two plans cost the same?
16. Plan A has a joining fee of 45 dollars plus 3 dollars per month. Plan B has a joining fee of 60 dollars plus 2 dollars per month. After how many months do the two plans cost the same?
17. Plan A has a joining fee of 45 dollars plus 3 dollars per month. Plan B has a joining fee of 16 dollars plus 4 dollars per month. After how many months do the two plans cost the same?
18. Plan A has a joining fee of 39 dollars plus 4 dollars per month. Plan B has a joining fee of 31 dollars plus 6 dollars per month. After how many months do the two plans cost the same?
19. Plan A has a joining fee of 59 dollars plus 6 dollars per month. Plan B has a joining fee of 39 dollars plus 8 dollars per month. After how many months do the two plans cost the same?
20. Plan A has a joining fee of 33 dollars plus 4 dollars per month. Plan B has a joining fee of 55 dollars plus 2 dollars per month. After how many months do the two plans cost the same?