-90=-9(6+2z)

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Solution for -90=-9(6+2z) equation: 


Simplifying
-90 = -9(6 + 2z)
-90 = (6 * -9 + 2z * -9)
-90 = (-54 + -18z)

Solving
-90 = -54 + -18z

Solving for variable 'z'.

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

Add '18z' to each side of the equation.
-90 + 18z = -54 + -18z + 18z

Combine like terms: -18z + 18z = 0
-90 + 18z = -54 + 0
-90 + 18z = -54

Add '90' to each side of the equation.
-90 + 90 + 18z = -54 + 90

Combine like terms: -90 + 90 = 0
0 + 18z = -54 + 90
18z = -54 + 90

Combine like terms: -54 + 90 = 36
18z = 36

Divide each side by '18'.
z = 2

Simplifying
z = 2

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