-12.9=5+7+3d

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Solution for -12.9=5+7+3d equation:


Simplifying
-12.9 = 5 + 7 + 3d

Combine like terms: 5 + 7 = 12
-12.9 = 12 + 3d

Solving
-12.9 = 12 + 3d

Solving for variable 'd'.

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

Add '-3d' to each side of the equation.
-12.9 + -3d = 12 + 3d + -3d

Combine like terms: 3d + -3d = 0
-12.9 + -3d = 12 + 0
-12.9 + -3d = 12

Add '12.9' to each side of the equation.
-12.9 + 12.9 + -3d = 12 + 12.9

Combine like terms: -12.9 + 12.9 = 0.0
0.0 + -3d = 12 + 12.9
-3d = 12 + 12.9

Combine like terms: 12 + 12.9 = 24.9
-3d = 24.9

Divide each side by '-3'.
d = -8.3

Simplifying
d = -8.3

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