Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 2 - Solving Equations - 2-3 Solving Multi-Step Equations - Practice and Problem-Solving Exercises: 23

Answer

$z=3.75$

Work Step by Step

Start with the given equation: $5(2+4z)=85$ We use the distributive property to expand the left side of the equation: $10+20z=85$ We subtract $10$ from both sides of the equation: $20z=85-10$ We combine like terms: $20z=75$ We divide both sides of the equation by $20$: $z=\frac{75}{20}=3.75$
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