Answer
37
Work Step by Step
$b = 2a+1$
$10a+b = 5b+2$
$10a+b = 5*(2a+1)+2$
$10a+b = 10a +5 + 2$
$10a+b = 10a+7$
$10a+b-10a= 10a+7-10a$
$b = 7$
$b = 2a+1$
$7 = 2a+1$
$7-1 = 2a+1-1$
$6 = 2a$
$6/2 = 2a/2$
$3 = a$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 6 - Systems of Equations and Inequalities - 6-4 Application of Linear Systems - Practice and Problem-Solving Exercises - Page 388: 27
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