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6=8.40x/2
We move all terms to the left:
6-(8.40x/2)=0
We add all the numbers together, and all the variables
-(+8.40x/2)+6=0
We get rid of parentheses
-8.40x/2+6=0
We multiply all the terms by the denominator
-8.40x+6*2=0
We add all the numbers together, and all the variables
-8.4x+12=0
We move all terms containing x to the left, all other terms to the right
-8.4x=-12
x=-12/-8.4
x=1+2.25/5.25
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