d+7d=80

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Solution for d+7d=80 equation: 


Simplifying
d + 7d = 80

Combine like terms: d + 7d = 8d
8d = 80

Solving
8d = 80

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Divide each side by '8'.
d = 10

Simplifying
d = 10

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