D+3+d=20

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Solution for D+3+d=20 equation:


Simplifying
D + 3 + d = 20

Reorder the terms:
3 + D + d = 20

Solving
3 + D + d = 20

Solving for variable 'D'.

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

Add '-3' to each side of the equation.
3 + D + -3 + d = 20 + -3

Reorder the terms:
3 + -3 + D + d = 20 + -3

Combine like terms: 3 + -3 = 0
0 + D + d = 20 + -3
D + d = 20 + -3

Combine like terms: 20 + -3 = 17
D + d = 17

Add '-1d' to each side of the equation.
D + d + -1d = 17 + -1d

Combine like terms: d + -1d = 0
D + 0 = 17 + -1d
D = 17 + -1d

Simplifying
D = 17 + -1d

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