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0.13=19.50(1-x)
We move all terms to the left:
0.13-(19.50(1-x))=0
We add all the numbers together, and all the variables
-(19.50(-1x+1))+0.13=0
We calculate terms in parentheses: -(19.50(-1x+1)), so:We get rid of parentheses
19.50(-1x+1)
We multiply parentheses
-19.5x+19.5
Back to the equation:
-(-19.5x+19.5)
19.5x-19.5+0.13=0
We add all the numbers together, and all the variables
19.5x-19.37=0
We move all terms containing x to the left, all other terms to the right
19.5x=19.37
x=19.37/19.5
x=1/1.006711409396
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