Question

Explain the difference between evaluating 3 * 7 - 4 ÷ 2 and evaluating 3(7 - 4) ÷ 2.

Answer 1

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Answer 2

In 3(7-4)/2 you have you have to multiply 3 by 7 and by -4 and the answer would be 21-12/2=9/2 or 4.5. While in 3 * 7 -4/2 you will have to multiply 3 by 7 only and your answer will be 21 -4/2=17/2 or 8.5.