d=20+-3d

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Solution for d=20+-3d equation: 


Simplifying
d = 20 + -3d

Solving
d = 20 + -3d

Solving for variable 'd'.

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

Add '3d' to each side of the equation.
d + 3d = 20 + -3d + 3d

Combine like terms: d + 3d = 4d
4d = 20 + -3d + 3d

Combine like terms: -3d + 3d = 0
4d = 20 + 0
4d = 20

Divide each side by '4'.
d = 5

Simplifying
d = 5

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