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25-10-2018
Mathematics

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A new customer comes into Bonnie’s shop and says he wants a frame that is 25 tiles on each side. He used the expression 4(x − 1) to calculate that he needed 99 tiles. Bonnie explains that he actually needs only 96 total tiles. What mistake did the customer make?

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25-10-2018

4(25-1)

4(24)=96

Do parentheses first before other operations.

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