19+2d=81

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Solution for 19+2d=81 equation:



19+2d=81
We move all terms to the left:
19+2d-(81)=0
We add all the numbers together, and all the variables
2d-62=0
We move all terms containing d to the left, all other terms to the right
2d=62
d=62/2
d=31

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