13=10+-3D

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Solution for 13=10+-3D equation:


Simplifying
13 = 10 + -3D

Solving
13 = 10 + -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.
13 + 3D = 10 + -3D + 3D

Combine like terms: -3D + 3D = 0
13 + 3D = 10 + 0
13 + 3D = 10

Add '-13' to each side of the equation.
13 + -13 + 3D = 10 + -13

Combine like terms: 13 + -13 = 0
0 + 3D = 10 + -13
3D = 10 + -13

Combine like terms: 10 + -13 = -3
3D = -3

Divide each side by '3'.
D = -1

Simplifying
D = -1

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