John and charlie have a whole of 80 dollars he has x dollar, Mathematics

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John and Charlie have a whole of 80 dollars. John has x dollars. How much money does Charlie have?

This problem translates to the expression 42 + (11 - 9) ÷ 2. Using order of operations, do the operation within the parentheses ?rst; 42 + (2) ÷ 2. Estimate the exponent; 16 + (2) ÷ 2. Divide 2 ÷ 2; 16 + 1. Add; 16 + 1 = 17.

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