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4=x/3.8
We move all terms to the left:
4-(x/3.8)=0
We add all the numbers together, and all the variables
-(+x/3.8)+4=0
We get rid of parentheses
-x/3.8+4=0
We multiply all the terms by the denominator
-x+4*3.8=0
We add all the numbers together, and all the variables
-1x+15.2=0
We move all terms containing x to the left, all other terms to the right
-x=-15.2
x=-15.2/-1
x=15+0.2/1
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