-2(-5z)=90

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Solution for -2(-5z)=90 equation: 


Simplifying
-2(-5z) = 90

Remove parenthesis around (-5z)
-2 * -5z = 90

Multiply -2 * -5
10z = 90

Solving
10z = 90

Solving for variable 'z'.

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

Divide each side by '10'.
z = 9

Simplifying
z = 9

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