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12 September, 08:46

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

Apollo and Zeus are both on diets. Apollo currently weighs 105 kg and is gaining 2 kg per month. Zeus currently weighs 130 kg and is losing 3 kg per month. In how many months will they weigh the same?

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  1. 12 September, 12:17
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    Equations:

    2x+105=-3x+130

    subtract 2x from both sides

    105 = - 5x+130

    Subtract 130 from both sides

    -5x = - 25

    isolate the variable

    x=5

    Plug back in

    2 (5) + 105 = - 3 (5) + 130

    115 = 115
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