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.21=x/18
We move all terms to the left:
.21-(x/18)=0
We add all the numbers together, and all the variables
-(+x/18)+.21=0
We add all the numbers together, and all the variables
-(+x/18)+0.21=0
We get rid of parentheses
-x/18+0.21=0
We multiply all the terms by the denominator
-x+(0.21)*18=0
We add all the numbers together, and all the variables
-1x+3.78=0
We move all terms containing x to the left, all other terms to the right
-x=-3.78
x=-3.78/-1
x=3+0.78/1
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