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4x+5x=7+3x
We move all terms to the left:
4x+5x-(7+3x)=0
We add all the numbers together, and all the variables
4x+5x-(3x+7)=0
We add all the numbers together, and all the variables
9x-(3x+7)=0
We get rid of parentheses
9x-3x-7=0
We add all the numbers together, and all the variables
6x-7=0
We move all terms containing x to the left, all other terms to the right
6x=7
x=7/6
x=1+1/6
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