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3x+1+x-4+3x+1+x-4=175
We move all terms to the left:
3x+1+x-4+3x+1+x-4-(175)=0
We add all the numbers together, and all the variables
8x-181=0
We move all terms containing x to the left, all other terms to the right
8x=181
x=181/8
x=22+5/8
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