-9=7(x-7)-3x

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Solution for -9=7(x-7)-3x equation:



-9=7(x-7)-3x
We move all terms to the left:
-9-(7(x-7)-3x)=0
We calculate terms in parentheses: -(7(x-7)-3x), so:
7(x-7)-3x
We add all the numbers together, and all the variables
-3x+7(x-7)
We multiply parentheses
-3x+7x-49
We add all the numbers together, and all the variables
4x-49
Back to the equation:
-(4x-49)
We get rid of parentheses
-4x+49-9=0
We add all the numbers together, and all the variables
-4x+40=0
We move all terms containing x to the left, all other terms to the right
-4x=-40
x=-40/-4
x=+10

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