2d-d+6=13

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Solution for 2d-d+6=13 equation: 


Simplifying
2d + -1d + 6 = 13

Reorder the terms:
6 + 2d + -1d = 13

Combine like terms: 2d + -1d = 1d
6 + 1d = 13

Solving
6 + 1d = 13

Solving for variable 'd'.

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

Add '-6' to each side of the equation.
6 + -6 + 1d = 13 + -6

Combine like terms: 6 + -6 = 0
0 + 1d = 13 + -6
1d = 13 + -6

Combine like terms: 13 + -6 = 7
1d = 7

Divide each side by '1'.
d = 7

Simplifying
d = 7

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