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-2x+4=-7x+9
We move all terms to the left:
-2x+4-(-7x+9)=0
We get rid of parentheses
-2x+7x-9+4=0
We add all the numbers together, and all the variables
5x-5=0
We move all terms containing x to the left, all other terms to the right
5x=5
x=5/5
x=1
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