Question 57

Simplify the following expression.
12 + 11 - 13 + (4 + 3)

Solution

= 12 + 11 - 13 + (4 + 3)

= 12 + 11 - 13 + 7

= 12 + 11 + 7 - 13

= 30 - 13

= 17

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