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Kiara has $520 in her bank account. Each week she deposits $80 and withdraws $35. Gael has $310 in his account. Each week he deposits $95 and withdraws $20. Write and solve an equation to determine the week w when Gael and Kiara have the same amount of money in their accounts. ​

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Answer:

520 + (80 - 35)w = 310 + (95 - 20)w

520 + 45w = 310 + 75w

30w = 210

w = 7 weeks

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