13=d+7

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Solution for 13=d+7 equation:


13=d+7

We simplify the equation to the form, which is simple to understand 
13=d+7

We move all terms containing d to the left and all other terms to the right. 
-1d=+7-13

We simplify left and right side of the equation. 
-1d=-6

We divide both sides of the equation by -01 to get d. 
d=6

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