Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 6 - Section 6.3 - Equations with Parentheses - Exercises: 3

Answer

n=0.4

Work Step by Step

Simplifying 3n + (2n + 4) = 6 Reorder the terms: 3n + (4 + 2n) = 6 Remove parenthesis around (4 + 2n) 3n + 4 + 2n = 6 Reorder the terms: 4 + 3n + 2n = 6 Combine like terms: 3n + 2n = 5n 4 + 5n = 6 Solving 4 + 5n = 6 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 5n = 6 + -4 Combine like terms: 4 + -4 = 0 0 + 5n = 6 + -4 5n = 6 + -4 Combine like terms: 6 + -4 = 2 5n = 2 Divide each side by '5'. n = 0.4 Simplifying n = 0.4
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