2.1=7d+0.7

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Solution for 2.1=7d+0.7 equation: 



2.1=7d+0.7

We move all terms to the left:

2.1-(7d+0.7)=0

We get rid of parentheses

-7d-0.7+2.1=0

We add all the numbers together, and all the variables

-7d+1.4=0

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

-7d=-1.4

d=-1.4/-7

d=1/5

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