CPM Homework Help : PC3 Problem 10-149

Solve each of the following equations.

$\sqrt { 2 g + 1 }= 7 − g$
Step 1(a):
$\sqrt{2g+1}^2=(7-g)^2$
Step 2(a):
$2g+1=49-14g+g^2$

$| z + 3 | = | 2 z - 1 |$
Hint (b):
Since both side of the equation have absolute value signs, both quantities could be positive or negative and the equation would still be true.
Step (b):
$z + 3 = 2z − 1$ or $−(z + 3) = 2z − 1$