CPM Homework Help : ACC7 Problem 3-94

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3-94.

For the following equations, solve for $x$ . Check your solution, if possible. Record your work.

$3x-7=3x+1$
Step 1 (a):
Add $7$ to both sides.
$3x-7=3x+1$
$\ \ \ +7\ \ \ \ \ \ +7$
Step 2 (a):
Subtract $3x$ from both sides.
$3x=3x+8$
$-3x-3x$
$0=8$
Answer (a):
The statement is not true; therefore, the answer is: No Solution.

$-2x-5=-4x+2$
Hint (b):
Follow the steps in part (a).

$2+3x=x+2+2x$
Hint (c):
Follow the steps in part (a).
Answer (c):
Any number.

$-(x-2)=x+2$
Hint (d):
How does the negative sign in front of the parentheses change what is inside?
More Help (d):
Follow the steps in part (a).

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