Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 7 - Cumulative Review - Page 529: 9



Work Step by Step

$3=\frac{x}{7}$ $3\times7=\frac{x}{7}\times7$ $21=x$ $x=21$ (generally when expressing the value of a variable, the variable is written on the left of the equals sign and the value of the variable is written on the right of the equals sign)
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