Answer
$x=t/(r+s)$
Work Step by Step
$(rx+sx)/t=1 \\\\ x(r+s)/t=1 \\\\ x=t/(r+s)$
We first factor out the x. This allows us to divide by (r+s) and multiply by t to get x alone and hence get our answer.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 2 - Solving Equations - 2-5 Literal Equations and Formulas - Practice and Problem-Solving Exercises - Page 112: 21
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