Answer
$$np = mq$$
Work Step by Step
When you cross-multiply, you multiply the numbers across from each other. In this example the numbers across from each other and n and p, and the other two across from each other are m and q.
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 2 - Solving Equations - 2-7 Solving Proportions - Lesson Check - Page 127: 8
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