D+15=135

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Solution for D+15=135 equation: 


Simplifying
D + 15 = 135

Reorder the terms:
15 + D = 135

Solving
15 + D = 135

Solving for variable 'D'.

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

Add '-15' to each side of the equation.
15 + -15 + D = 135 + -15

Combine like terms: 15 + -15 = 0
0 + D = 135 + -15
D = 135 + -15

Combine like terms: 135 + -15 = 120
D = 120

Simplifying
D = 120

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