91=-7d

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Solution for 91=-7d equation:


Simplifying
91 = -7d

Solving
91 = -7d

Solving for variable 'd'.

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

Add '7d' to each side of the equation.
91 + 7d = -7d + 7d

Combine like terms: -7d + 7d = 0
91 + 7d = 0

Add '-91' to each side of the equation.
91 + -91 + 7d = 0 + -91

Combine like terms: 91 + -91 = 0
0 + 7d = 0 + -91
7d = 0 + -91

Combine like terms: 0 + -91 = -91
7d = -91

Divide each side by '7'.
d = -13

Simplifying
d = -13

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