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-5(3-12)=2(3+5)+4D
We move all terms to the left:
-5(3-12)-(2(3+5)+4D)=0
We add all the numbers together, and all the variables
-(28+4D)-5(-9)=0
We add all the numbers together, and all the variables
-(28+4D)+45=0
We get rid of parentheses
-4D-28+45=0
We add all the numbers together, and all the variables
-4D+17=0
We move all terms containing D to the left, all other terms to the right
-4D=-17
D=-17/-4
D=4+1/4
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