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0.81+0.2x=9/8
We move all terms to the left:
0.81+0.2x-(9/8)=0
We add all the numbers together, and all the variables
0.2x+0.81-(+9/8)=0
We get rid of parentheses
0.2x+0.81-9/8=0
We multiply all the terms by the denominator
(0.2x)*8-9+(0.81)*8=0
We add all the numbers together, and all the variables
(+0.2x)*8-9+(0.81)*8=0
We add all the numbers together, and all the variables
(+0.2x)*8-2.52=0
We multiply parentheses
0x-2.52=0
We add all the numbers together, and all the variables
x-2.52=0
We move all terms containing x to the left, all other terms to the right
x=2.52
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