Find error in calculation

Sally calculation are as follows 39-9×4+12
=30×16
=480

what 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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Showing 1 comment:
Dr Math
See our decimal calculator:

https://www.hackmath.net/en/calculator/decimal?input=39-9%C3%974%2B12  

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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