10(9-z)=-2z

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Solution for 10(9-z)=-2z equation:


Simplifying
10(9 + -1z) = -2z
(9 * 10 + -1z * 10) = -2z
(90 + -10z) = -2z

Solving
90 + -10z = -2z

Solving for variable 'z'.

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

Add '2z' to each side of the equation.
90 + -10z + 2z = -2z + 2z

Combine like terms: -10z + 2z = -8z
90 + -8z = -2z + 2z

Combine like terms: -2z + 2z = 0
90 + -8z = 0

Add '-90' to each side of the equation.
90 + -90 + -8z = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -8z = 0 + -90
-8z = 0 + -90

Combine like terms: 0 + -90 = -90
-8z = -90

Divide each side by '-8'.
z = 11.25

Simplifying
z = 11.25

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