CPM Homework Help : MC2 Problem 6-125

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6-125.

Simplify and solve each equation below for $x$ . Show your work and record your final answer.

$24 = 3x + 3$
Step 1(a):
Begin isolating the variable by subtracting $3$ from each side.
Step 2(a):
$24 = 3x + 3$
$−3 −3$
$21 = 3x$
Divide each side by $3$ .
Answer (a):
$x = \frac{21}{3} = 7$

$12 + x = 2x – 2$
Hint (b):
Follow the method of isolating the variable as presented in (a).

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