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4x+2x-3+3x+25+4x+25+3x+15=540
We move all terms to the left:
4x+2x-3+3x+25+4x+25+3x+15-(540)=0
We add all the numbers together, and all the variables
16x-478=0
We move all terms containing x to the left, all other terms to the right
16x=478
x=478/16
x=29+7/8
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