Question

Ivan tried to evaluate the expression 6 - 2 + 4 x 9. Here is his work:

6 - 2 + 4 X 9
= 6 - 2 + 36
Step 1
= 4 + 36
Step 2
= 40
Step 3
Is Ivan's work correct?
ewNo, Ivan made a mistake in Step 1. Ivan should have subtracted first. The
order of operations says to work from left to right.
No, Ivan made a mistake in Step 2. Ivan should have added before he
subtracted. The order of operations says to add before you subtract.
Yes, Ivan's work is correct.​

Answer 1

Ivan is correct, because according to PEMDAS, multiplication comes first before both addition and subtraction, so all of Ivan's steps are correct.

Answer 2

I believe he is correct because you add/subtract from left to right, hence

6-2 comes first.

PEMDAS

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