-20=-4x=-9x+7x

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Solution for -20=-4x=-9x+7x equation:



-20=-4x=-9x+7x
We move all terms to the left:
-20-(-4x)=0
We get rid of parentheses
4x-20=0
We move all terms containing x to the left, all other terms to the right
4x=20
x=20/4
x=5

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