SOLUTION: Solve: 9 � (3x � 2) = 21

Question 127501: Solve: 9 � (3x � 2) = 21
Found 2 solutions by checkley71, bucky:
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
9-(3x-2)=21
9-3x+2=21
-3x=21-9-2
-3x=20
x=20/-3
x=-20/3 answer.
pROOF:
9-(3*-20/3-2)=21
9-(-10-2)=21
9-(-12)=21
9+12=21
21=21
Answer by bucky(2189) (Show Source): You can put this solution on YOUR website!
Given to solve:
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Begin by removing the parentheses. Since the parentheses are preceded by a negative sign
if you remove them you change the signs of the terms inside. This leads you to getting:
.

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On the left side combine the 9 and the + 2 to get 11 and this makes the equation:
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Get rid of the +11 on the left side by subtracting 11 from both sides and you then have:
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Solve for x by dividing both sides by -3 and the answer becomes:
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Hope this helps you to understand the problem.
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