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d+1/2=-3
We move all terms to the left:
d+1/2-(-3)=0
We add all the numbers together, and all the variables
d+3+1/2=0
We multiply all the terms by the denominator
d*2+1+3*2=0
We add all the numbers together, and all the variables
d*2+7=0
Wy multiply elements
2d+7=0
We move all terms containing d to the left, all other terms to the right
2d=-7
d=-7/2
d=-3+1/2
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