15-20-12d=19-10d

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Solution for 15-20-12d=19-10d equation:



15-20-12d=19-10d
We move all terms to the left:
15-20-12d-(19-10d)=0
We add all the numbers together, and all the variables
-12d-(-10d+19)+15-20=0
We add all the numbers together, and all the variables
-12d-(-10d+19)-5=0
We get rid of parentheses
-12d+10d-19-5=0
We add all the numbers together, and all the variables
-2d-24=0
We move all terms containing d to the left, all other terms to the right
-2d=24
d=24/-2
d=-12

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