Question

What is the first step in evaluating this expression?

Expression
15 + 20 ÷ (10 - 7) + 12

A. Subtract 7 from 10.
B. Divided 20 by 10.
C. Add 15 and 20.
D. Add 7 and 12.

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Answer 1

A.

PEMDAS

Parenthesis always comes first, then exponents, multiplication and division, adding and subtracting

Answer 2

Answer:

A. Subtract 7 from 10.

Step-by-step explanation:

Simply remember PEMDAS.

P  arentheses

E  xponents

M  ultiplication

D  ivision

A  ddition

S  ubtraction