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20/3.14=d
We move all terms to the left:
20/3.14-(d)=0
We add all the numbers together, and all the variables
-1d+20/3.14=0
We multiply all the terms by the denominator
-1d*3.14+20=0
Wy multiply elements
-3.14d+20=0
We move all terms containing d to the left, all other terms to the right
-3.14d=-20
d=-20/-3.14
d=6+1/2.7068965517241
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