30-d=2d

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Solution for 30-d=2d equation:


Simplifying
30 + -1d = 2d

Solving
30 + -1d = 2d

Solving for variable 'd'.

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

Add '-2d' to each side of the equation.
30 + -1d + -2d = 2d + -2d

Combine like terms: -1d + -2d = -3d
30 + -3d = 2d + -2d

Combine like terms: 2d + -2d = 0
30 + -3d = 0

Add '-30' to each side of the equation.
30 + -30 + -3d = 0 + -30

Combine like terms: 30 + -30 = 0
0 + -3d = 0 + -30
-3d = 0 + -30

Combine like terms: 0 + -30 = -30
-3d = -30

Divide each side by '-3'.
d = 10

Simplifying
d = 10

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