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4x/5=3.15
We move all terms to the left:
4x/5-(3.15)=0
We add all the numbers together, and all the variables
4x/5-3.15=0
We multiply all the terms by the denominator
4x-(3.15)*5=0
We add all the numbers together, and all the variables
4x-15.75=0
We move all terms containing x to the left, all other terms to the right
4x=15.75
x=15.75/4
x=3+2.1428571428571/2.2857142857143
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