81=-9d

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Solution for 81=-9d equation:


Simplifying
81 = -9d

Solving
81 = -9d

Solving for variable 'd'.

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

Add '9d' to each side of the equation.
81 + 9d = -9d + 9d

Combine like terms: -9d + 9d = 0
81 + 9d = 0

Add '-81' to each side of the equation.
81 + -81 + 9d = 0 + -81

Combine like terms: 81 + -81 = 0
0 + 9d = 0 + -81
9d = 0 + -81

Combine like terms: 0 + -81 = -81
9d = -81

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

Simplifying
d = -9

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