Find error in calculation

Sally's calculations are as follows 39-9×4+12

What are the errors in this calculation?

Correct answer:

x =  15

Step-by-step explanation:

x=399 4+12 x=3936+12=15

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Dr Math
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Sally has an error; she firstly subtracted and added and then multiplied operands. The math problem is about the order of operations without brackets. Multiply first, then add and subtract.

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