How much money in amount of months

Question

Edy has $450 in her saving account. She deposites $40 each month. Jaun has $975 in his checking account. He writes a checko for $45 dollars each month for his cell phone bill. He also writes a check for $20 dollars each month for his water bill. After how many months will edy and Jaun have the same amount of money in their accounts

Answer 1

Set up two equations to be equal to each other:

Edy starts with $450 and adds $40 every month so Edy's equation is 450+40x

Jaun has $975 and $65 (cell phone bill plus water bill) comes out every month so Jauns equation is 975-65x

Set the two equal to each other:

450+40x=975-65x

Solve for x