7d+3=2d-12

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Solution for 7d+3=2d-12 equation:


Simplifying
7d + 3 = 2d + -12

Reorder the terms:
3 + 7d = 2d + -12

Reorder the terms:
3 + 7d = -12 + 2d

Solving
3 + 7d = -12 + 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.
3 + 7d + -2d = -12 + 2d + -2d

Combine like terms: 7d + -2d = 5d
3 + 5d = -12 + 2d + -2d

Combine like terms: 2d + -2d = 0
3 + 5d = -12 + 0
3 + 5d = -12

Add '-3' to each side of the equation.
3 + -3 + 5d = -12 + -3

Combine like terms: 3 + -3 = 0
0 + 5d = -12 + -3
5d = -12 + -3

Combine like terms: -12 + -3 = -15
5d = -15

Divide each side by '5'.
d = -3

Simplifying
d = -3

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