7-2(10d+1)=25

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Solution for 7-2(10d+1)=25 equation: 



7-2(10d+1)=25

We move all terms to the left:

7-2(10d+1)-(25)=0

We add all the numbers together, and all the variables

-2(10d+1)-18=0

We multiply parentheses

-20d-2-18=0

We add all the numbers together, and all the variables

-20d-20=0

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

-20d=20

d=20/-20

d=-1

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