CPM Homework Help : CC3MN Problem 5-6

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Home > CC3MN > Chapter 5 > Lesson 5.1.1 > Problem 5-6

5-6.

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

Solve for $x$ : $2x+22=12$
Hint (a):
Get $x$ on one side of the equation by itself.
More Help 1(a):
Subtract $22$ from both sides.
More Help 2(a):
Divide both sides by $2$ .
Answer (a):
$x=−5$

Solve for $y$ : $2x−y=3$
Hint (b):
Follow the steps in part (a). You will end up with a new equation, not a number solution.

Solve for $x$ : $2x+15=2x−15$
Hint (c):
Can $2x+15$ ever $=2x−15$ ?
Answer (c):
There is no solution.

Solve for $y$ : $6x+2y=10$
Hint (d):
Follow the steps in part (a). Again, you will end up with a new equation.
Answer (d):
$y=−3x+5$

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