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Write an equation or system of equations to solve the problem below.

Apollo and Zeus are both on diets. Apollo currently weighs kg and is gaining kg per month. Zeus currently weighs kg and is losing kg per month. In how many months will they weigh the same?

Let stand for Apollo's weight, stand for Zeus' weight, and stand for the number of months.

Set these two equations equal to each other.


Use the eTool below to help you write equations for both Apollo and Zeus to discover at how many months they will weigh the same amount.
Click the link at right for the full eTool version: CCA2 A-81 HW eTool