Answer
Both expressions have the same value, $32$.
$3x+5x=8x$
Work Step by Step
Evaluating $3x+5x$ when $x=4:$
$3(4)+5(4)=12+20=32$
Evaluating $8x$ when $x=4:$
$8(4)=32.$
Our observations:
Both expressions have the same value, $32$.
$3x+5x=8x$
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 1 - Section 1.3 - The Real Numbers - Exercise Set - Page 43: 125
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