20d-18d+d+d-2d=18

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Solution for 20d-18d+d+d-2d=18 equation: 


Simplifying
20d + -18d + d + d + -2d = 18

Combine like terms: 20d + -18d = 2d
2d + d + d + -2d = 18

Combine like terms: 2d + d = 3d
3d + d + -2d = 18

Combine like terms: 3d + d = 4d
4d + -2d = 18

Combine like terms: 4d + -2d = 2d
2d = 18

Solving
2d = 18

Solving for variable 'd'.

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

Divide each side by '2'.
d = 9

Simplifying
d = 9

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