9-7d=-8d

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Solution for 9-7d=-8d equation:


Simplifying
9 + -7d = -8d

Solving
9 + -7d = -8d

Solving for variable 'd'.

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

Add '8d' to each side of the equation.
9 + -7d + 8d = -8d + 8d

Combine like terms: -7d + 8d = 1d
9 + 1d = -8d + 8d

Combine like terms: -8d + 8d = 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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