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4x/7+3=31
We move all terms to the left:
4x/7+3-(31)=0
We add all the numbers together, and all the variables
4x/7-28=0
We multiply all the terms by the denominator
4x-28*7=0
We add all the numbers together, and all the variables
4x-196=0
We move all terms containing x to the left, all other terms to the right
4x=196
x=196/4
x=49
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