-9d-12=9-7d+19

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Solution for -9d-12=9-7d+19 equation:


Simplifying
-9d + -12 = 9 + -7d + 19

Reorder the terms:
-12 + -9d = 9 + -7d + 19

Reorder the terms:
-12 + -9d = 9 + 19 + -7d

Combine like terms: 9 + 19 = 28
-12 + -9d = 28 + -7d

Solving
-12 + -9d = 28 + -7d

Solving for variable 'd'.

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

Add '7d' to each side of the equation.
-12 + -9d + 7d = 28 + -7d + 7d

Combine like terms: -9d + 7d = -2d
-12 + -2d = 28 + -7d + 7d

Combine like terms: -7d + 7d = 0
-12 + -2d = 28 + 0
-12 + -2d = 28

Add '12' to each side of the equation.
-12 + 12 + -2d = 28 + 12

Combine like terms: -12 + 12 = 0
0 + -2d = 28 + 12
-2d = 28 + 12

Combine like terms: 28 + 12 = 40
-2d = 40

Divide each side by '-2'.
d = -20

Simplifying
d = -20

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