CPM Homework Help : GB8I Problem 9-75

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Home > GB8I > Chapter 9 Unit 10 > Lesson INT1: 9.3.1 > Problem 9-75

9-75.

Solve the following equations for $x$ .

$4x−6y=20$
Hint (a):
Your answer will be an equation with $y$ in it.

$\frac{1}{2}(x−6)=9$
Hint (b):
Try multiplying both sides of the equation by $2$ first.

$\frac{4}{5}+\frac{18}{x}=8$
Hint (c):
Multiply both sides of the equation by the common denominator.
Answer (c):
$x = 2.5$

$2 +| 2 x - 3 |= 5$
Hint (d):
Start by subtracting $2$ from both sides. Then remember that equations with absolute value usually have two solutions.
Answer (d):
$x = 3 \text{ or } 0$

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