2.9d-7.5=7

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Solution for 2.9d-7.5=7 equation: 



2.9d-7.5=7

We move all terms to the left:

2.9d-7.5-(7)=0

We add all the numbers together, and all the variables

2.9d-14.5=0

We move all terms containing d to the left, all other terms to the right

2.9d=14.5

d=14.5/2.9

d=5

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