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342=d/0.3
We move all terms to the left:
342-(d/0.3)=0
We add all the numbers together, and all the variables
-(+d/0.3)+342=0
We get rid of parentheses
-d/0.3+342=0
We multiply all the terms by the denominator
-d+342*0.3=0
We add all the numbers together, and all the variables
-1d+102.6=0
We move all terms containing d to the left, all other terms to the right
-d=-102.6
d=-102.6/-1
d=102+0.59999999999999/1
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