SOLUTION: –3(10x – 3) + 10(3x – 3) = x – 7

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Question 71196: –3(10x – 3) + 10(3x – 3) = x – 7
Answer by elima(1433) About Me  (Show Source):
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–3(10x – 3) + 10(3x – 3) = x – 7
first distribute the -3 and 10;
-30x +9 + 30x -30 = x -7
-30x and 30 x cancel each other out;
-21=x-7
add 7 to both sides;
-21+7=x
-14 = x
:)