91=-7z

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Solution for 91=-7z equation:


Simplifying
91 = -7z

Solving
91 = -7z

Solving for variable 'z'.

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

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

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

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

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

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

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

Simplifying
z = -13

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