9-2d=-d

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Solution for 9-2d=-d equation:


Simplifying
9 + -2d = -1d

Solving
9 + -2d = -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.
9 + -2d + d = -1d + d

Combine like terms: -2d + d = -1d
9 + -1d = -1d + d

Combine like terms: -1d + d = 0
9 + -1d = 0

Add '-9' to each side of the equation.
9 + -9 + -1d = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -1d = 0 + -9
-1d = 0 + -9

Combine like terms: 0 + -9 = -9
-1d = -9

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

Simplifying
d = 9

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