7+d=7+d

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Solution for 7+d=7+d equation: 



7+d=7+d

We move all terms to the left:

7+d-(7+d)=0

We add all the numbers together, and all the variables

d-(d+7)+7=0

We get rid of parentheses

d-d-7+7=0

We add all the numbers together, and all the variables

=0

d=0/1

d=0

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