Answers

2016-07-13T17:10:44+08:00
Use pemdas.
PEMDAS is an acronym for the words parenthesis, exponents, multiplication, division, addition, subtraction. Given two or more operations in a single expression, the order of the letters in PEMDAS tells you what to calculate first, second, third and so on, until the calculation is complete.

45-24+7
45-31
14
0