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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?

Write an equation for Apollo and an equation for Zeus.

If they weigh the same, what should you do with your equations?

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: CCA 5-80 HW eTool