7d-4d=9

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Solution for 7d-4d=9 equation: 


Simplifying
7d + -4d = 9

Combine like terms: 7d + -4d = 3d
3d = 9

Solving
3d = 9

Solving for variable 'd'.

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

Divide each side by '3'.
d = 3

Simplifying
d = 3

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