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1.3d=-8.45
We move all terms to the left:
1.3d-(-8.45)=0
We add all the numbers together, and all the variables
1.3d+8.45=0
We move all terms containing d to the left, all other terms to the right
1.3d=-8.45
d=-8.45/1.3
d=-6+0.65/1.3
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