9z-(-16z)-16z-(-16)=-20

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Solution for 9z-(-16z)-16z-(-16)=-20 equation:


Simplifying
9z + -1(-16z) + -16z + -1(-16) = -20

Remove parenthesis around (-16z)
9z + -1 * -16z + -16z + -1(-16) = -20

Multiply -1 * -16
9z + 16z + -16z + -1(-16) = -20

Multiply -1 * -16
9z + 16z + -16z + 16 = -20

Reorder the terms:
16 + 9z + 16z + -16z = -20

Combine like terms: 9z + 16z = 25z
16 + 25z + -16z = -20

Combine like terms: 25z + -16z = 9z
16 + 9z = -20

Solving
16 + 9z = -20

Solving for variable 'z'.

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

Add '-16' to each side of the equation.
16 + -16 + 9z = -20 + -16

Combine like terms: 16 + -16 = 0
0 + 9z = -20 + -16
9z = -20 + -16

Combine like terms: -20 + -16 = -36
9z = -36

Divide each side by '9'.
z = -4

Simplifying
z = -4

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