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2.5-1.2d=2.14
We move all terms to the left:
2.5-1.2d-(2.14)=0
We add all the numbers together, and all the variables
-1.2d+0.36=0
We move all terms containing d to the left, all other terms to the right
-1.2d=-0.36
d=-0.36/-1.2
d=0.36/1.2
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