D+9=6.9

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Solution for D+9=6.9 equation: 


Simplifying
D + 9 = 6.9

Reorder the terms:
9 + D = 6.9

Solving
9 + D = 6.9

Solving for variable 'D'.

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

Add '-9' to each side of the equation.
9 + -9 + D = 6.9 + -9

Combine like terms: 9 + -9 = 0
0 + D = 6.9 + -9
D = 6.9 + -9

Combine like terms: 6.9 + -9 = -2.1
D = -2.1

Simplifying
D = -2.1

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