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3x+x=27.50
We move all terms to the left:
3x+x-(27.50)=0
We add all the numbers together, and all the variables
3x+x-(27.5)=0
We add all the numbers together, and all the variables
4x-27.5=0
We move all terms containing x to the left, all other terms to the right
4x=27.5
x=27.5/4
x=6+2.33333333333/2.66666666667
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