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Q2A.

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Algebra 1

Found in: Page 10

Book edition Student Edition

Author(s) Carter, Cuevas, Day, Holiday, Luchin

Pages 801 pages

ISBN 9780078884801

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Short Answer

Evaluate the expression $3 + 42 \cdot 2 - 5$ .

The simplification expression of $3 + 42 \cdot 2 - 5$ is 82.

See the step by step solution

Step by Step Solution

TABLE OF CONTENTS :

TABLE OF CONTENTS

Step 1. Apply the BODMAS rule.

According to the BODMAS rule of simplification, at first, the multiplication operation must be completed followed by addition and then subtraction.

Step 2. Example of applying BODMAS rule.

The expression $2 - 5 \cdot 2 + 20$ can be written as

$\begin{array}{l} 2 - 5 \cdot 2 + 20 = 2 - (5 \times 2) + 20 \\ = 2 - 10 + 20 \\ = (2 + 20) - 10 \\ = 22 - 10 \\ = 12 \end{array}$

Step 3. DESCRIPTION OF STEP.

The expression $3 + 42 \cdot 2 - 5$ can be simplified as follows:

$\begin{array}{l} 3 + 42 \cdot 2 - 5 \\ = 3 + (42 \times 2) - 5 \\ = 3 + 84 - 5 \\ = 87 - 5 \\ = 82 \end{array}$

Hence, the simplified expression of $3 + 42 \cdot 2 - 5$ is 82.

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