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