Big Ideas Math - Algebra 1, A Common Core Curriculum

Published by Big Ideas Learning LLC
ISBN 10: 978-1-60840-838-2
ISBN 13: 978-1-60840-838-2

Chapter 1 - Solving Linear Equations - 1.1 - Solving Simple Equations - Exercises - Page 9: 45

Answer

Multiplication property of equality.

Work Step by Step

If we multiply an equation by a non-zero number on both sides, the new equation is equivalent to the original equation according to the multiplication property of equality. In the given case, when we multiply equation 1 by $4$ on both sides, we obtain equation 2. So, according to the multiplication property of equality, both the equations are equivalent.
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