-9z-(-10z)=-7

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Solution for -9z-(-10z)=-7 equation: 


Simplifying
-9z + -1(-10z) = -7

Remove parenthesis around (-10z)
-9z + -1 * -10z = -7

Multiply -1 * -10
-9z + 10z = -7

Combine like terms: -9z + 10z = 1z
1z = -7

Solving
1z = -7

Solving for variable 'z'.

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

Divide each side by '1'.
z = -7

Simplifying
z = -7

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