2d+d-3d+2d-d=7

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Solution for 2d+d-3d+2d-d=7 equation: 


Simplifying
2d + d + -3d + 2d + -1d = 7

Combine like terms: 2d + d = 3d
3d + -3d + 2d + -1d = 7

Combine like terms: 3d + -3d = 0
0 + 2d + -1d = 7
2d + -1d = 7

Combine like terms: 2d + -1d = 1d
1d = 7

Solving
1d = 7

Solving for variable 'd'.

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

Divide each side by '1'.
d = 7

Simplifying
d = 7

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