2d-d-d+2d=12

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Solution for 2d-d-d+2d=12 equation: 


Simplifying
2d + -1d + -1d + 2d = 12

Combine like terms: 2d + -1d = 1d
1d + -1d + 2d = 12

Combine like terms: 1d + -1d = 0
0 + 2d = 12
2d = 12

Solving
2d = 12

Solving for variable 'd'.

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

Divide each side by '2'.
d = 6

Simplifying
d = 6

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