CPM Homework Help : AC Problem 4-64

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Home > AC > Chapter 4 > Lesson 4.1.7 > Problem 4-64

4-64.

Solve each of the following equations and check your answers.

$2x-3=7$
Hint (a)
Add $3$ to both sides to get the variable by itself.
$\begin{align*}2x-3&=7 \\ +3 &+3 \end{align*}$
More Help (a)
$2x = 10$
Solve for $x$ .
Answer (a)
$x = 5$

$3x+5-x=x-3$
Hint (b)
Combine like terms.
More Help (b)
Follow the steps in part (a).

$5x-\left(x+1\right)=6-2x$
Hint (c)
How does the negative sign in front of the parentheses change what is inside it?
More Help (c)
Follow the steps in part (b).

$0.5x-5=x+4$
Hint (d)
Follow the steps in part (b).
Answer (d)
$x=-18$

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