Answer
See explanations below
Work Step by Step
A)We substitute the variable in the equation, to get $-5+7=10+3$ which is not true and thus it is not a solution.
B)
Subtract $7-3x$ from each side,
$8x=3$
Then divide by 8,
$x=3/8$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter P, Prerequisites - Chapter P Review - Concept Check - Page 75: 18
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