d-1=-d-19

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Solution for d-1=-d-19 equation:



d-1=-d-19
We move all terms to the left:
d-1-(-d-19)=0
We add all the numbers together, and all the variables
d-(-1d-19)-1=0
We get rid of parentheses
d+1d+19-1=0
We add all the numbers together, and all the variables
2d+18=0
We move all terms containing d to the left, all other terms to the right
2d=-18
d=-18/2
d=-9

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