12-2d=d-18

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Solution for 12-2d=d-18 equation:


Simplifying
12 + -2d = d + -18

Reorder the terms:
12 + -2d = -18 + d

Solving
12 + -2d = -18 + d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
12 + -2d + -1d = -18 + d + -1d

Combine like terms: -2d + -1d = -3d
12 + -3d = -18 + d + -1d

Combine like terms: d + -1d = 0
12 + -3d = -18 + 0
12 + -3d = -18

Add '-12' to each side of the equation.
12 + -12 + -3d = -18 + -12

Combine like terms: 12 + -12 = 0
0 + -3d = -18 + -12
-3d = -18 + -12

Combine like terms: -18 + -12 = -30
-3d = -30

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

Simplifying
d = 10

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