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PEMDAS

Solve the exp...

Question

Solve the expression: $4 - 2 + 7$

A

9

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B

10

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C

8

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Solution

The correct option is A 9
Order of operations for solving a mathematical expression that we must follow is:
$P \to Parenthesis E \to Exponents M \to Multiplication D \to Division A \to Addition S \to Subtraction$

The given expression $4 - 2 + 7$ has addition and subtraction operations.
We know that addition and subtraction are at the same level.

Hence, we perform the operation stating from the left.
$4 - 2 + 7$
$= 2 + 7$
$= 2 + 7$

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