Answer
$=19$
Work Step by Step
We plug in w=6 to obtain:
$\frac{w+57}{9} + \frac{90-w}{7}$
$= \frac{6+57}{9} + \frac{90-6}{7}$
$= \frac{63}{9} + \frac{84}{7}$
$= 7 + 12$
$= 19$
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - 1.1 - Numerical and Algebraic Expressions - Problem Set 1.1 - Page 7: 46
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