6-2d=15-d

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Solution for 6-2d=15-d equation:


Simplifying
6 + -2d = 15 + -1d

Solving
6 + -2d = 15 + -1d

Solving for variable 'd'.

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

Add 'd' to each side of the equation.
6 + -2d + d = 15 + -1d + d

Combine like terms: -2d + d = -1d
6 + -1d = 15 + -1d + d

Combine like terms: -1d + d = 0
6 + -1d = 15 + 0
6 + -1d = 15

Add '-6' to each side of the equation.
6 + -6 + -1d = 15 + -6

Combine like terms: 6 + -6 = 0
0 + -1d = 15 + -6
-1d = 15 + -6

Combine like terms: 15 + -6 = 9
-1d = 9

Divide each side by '-1'.
d = -9

Simplifying
d = -9

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