(-z)(-7z)=

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


Simplifying
(-1z)(-7z) = 0

Remove parenthesis around (-1z)
-1z(-7z) = 0

Remove parenthesis around (-7z)
-1z * -7z = 0

Reorder the terms for easier multiplication:
-1 * -7z * z = 0

Multiply -1 * -7
7z * z = 0

Multiply z * z
7z2 = 0

Solving
7z2 = 0

Solving for variable 'z'.

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

Divide each side by '7'.
z2 = 0

Simplifying
z2 = 0

Take the square root of each side:
z = {0}

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