D-12+7=8

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Solution for D-12+7=8 equation: 


Simplifying
D + -12 + 7 = 8

Reorder the terms:
-12 + 7 + D = 8

Combine like terms: -12 + 7 = -5
-5 + D = 8

Solving
-5 + D = 8

Solving for variable 'D'.

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

Add '5' to each side of the equation.
-5 + 5 + D = 8 + 5

Combine like terms: -5 + 5 = 0
0 + D = 8 + 5
D = 8 + 5

Combine like terms: 8 + 5 = 13
D = 13

Simplifying
D = 13

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