What is the answer? `9 - 5 + 5* 0 + 3 =`  I say the answer is 12, want to be sure I'm right. Other people say: 7. How is that?  

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lemjay | High School Teacher | (Level 2) Senior Educator

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To simplify, apply the order of operations known as PEMDAS (Parenthesis, Exponent, Multiplication/Division, and Addition/Subtraction.

Note that the operations involved in the given expression are subtraction, addition and multiplication.

So multiply first 5 and 0, since in PEMDAS, multiplication comes before addition and subtraction.


Then, moving from left to right in the resulting expression, do the subtraction.


And, do the addition.


Hence, `9-5+5*0+3=7` .


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