7d-5d+3D-3D+2d=20

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Solution for 7d-5d+3D-3D+2d=20 equation: 


Simplifying
7d + -5d + 3D + -3D + 2d = 20

Reorder the terms:
3D + -3D + 7d + -5d + 2d = 20

Combine like terms: 3D + -3D = 0
0 + 7d + -5d + 2d = 20
7d + -5d + 2d = 20

Combine like terms: 7d + -5d = 2d
2d + 2d = 20

Combine like terms: 2d + 2d = 4d
4d = 20

Solving
4d = 20

Solving for variable 'd'.

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

Divide each side by '4'.
d = 5

Simplifying
d = 5

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