CPM Homework Help : GB8I Problem 6-143

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Home > GB8I > Chapter 6 Unit 7 > Lesson INT1: 6.4.2 > Problem 6-143

6-143.

Solve each equation below for the indicated variable. Show all steps.

Solve for $x$ : $2x + 22 = 12$
Answer (a):
$x = −5$

Solve for $y$ : $2x-y=3$
Hint (b):
Add $y$ to both sides of the equation.
Hint 2 (b):
How can you move $3$ to isolate $y$ on the right side of the equation?

Solve for $x$ : $2x+15=2x-15$
Hint (c):
If you subtract $2x$ from both sides of the equation, what kind of statement is left? Is there any value of $x$ that will make this equation true?

Solve for $y$ : $6x + 2y = 10$
Answer (d):
$y=5-3x$

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