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2x+7x-4=26-3
We move all terms to the left:
2x+7x-4-(26-3)=0
We add all the numbers together, and all the variables
2x+7x-4-23=0
We add all the numbers together, and all the variables
9x-27=0
We move all terms containing x to the left, all other terms to the right
9x=27
x=27/9
x=3
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