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8.5=6.59(2d-3)+d
We move all terms to the left:
8.5-(6.59(2d-3)+d)=0
We calculate terms in parentheses: -(6.59(2d-3)+d), so:We get rid of parentheses
6.59(2d-3)+d
We add all the numbers together, and all the variables
d+6.59(2d-3)
We multiply parentheses
d+13.18d-19.77
We add all the numbers together, and all the variables
14.18d-19.77
Back to the equation:
-(14.18d-19.77)
-14.18d+19.77+8.5=0
We add all the numbers together, and all the variables
-14.18d+28.27=0
We move all terms containing d to the left, all other terms to the right
-14.18d=-28.27
d=-28.27/-14.18
d=1+1/1.0063875088715
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