90=-5z

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Solution for 90=-5z equation:


Simplifying
90 = -5z

Solving
90 = -5z

Solving for variable 'z'.

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

Add '5z' to each side of the equation.
90 + 5z = -5z + 5z

Combine like terms: -5z + 5z = 0
90 + 5z = 0

Add '-90' to each side of the equation.
90 + -90 + 5z = 0 + -90

Combine like terms: 90 + -90 = 0
0 + 5z = 0 + -90
5z = 0 + -90

Combine like terms: 0 + -90 = -90
5z = -90

Divide each side by '5'.
z = -18

Simplifying
z = -18

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