3d-12=d+3

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Solution for 3d-12=d+3 equation:


Simplifying
3d + -12 = d + 3

Reorder the terms:
-12 + 3d = d + 3

Reorder the terms:
-12 + 3d = 3 + d

Solving
-12 + 3d = 3 + 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 + 3d + -1d = 3 + d + -1d

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

Combine like terms: d + -1d = 0
-12 + 2d = 3 + 0
-12 + 2d = 3

Add '12' to each side of the equation.
-12 + 12 + 2d = 3 + 12

Combine like terms: -12 + 12 = 0
0 + 2d = 3 + 12
2d = 3 + 12

Combine like terms: 3 + 12 = 15
2d = 15

Divide each side by '2'.
d = 7.5

Simplifying
d = 7.5

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