-8(z-9)-(-5z-9)=-4z

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Solution for -8(z-9)-(-5z-9)=-4z equation:


Simplifying
-8(z + -9) + -1(-5z + -9) = -4z

Reorder the terms:
-8(-9 + z) + -1(-5z + -9) = -4z
(-9 * -8 + z * -8) + -1(-5z + -9) = -4z
(72 + -8z) + -1(-5z + -9) = -4z

Reorder the terms:
72 + -8z + -1(-9 + -5z) = -4z
72 + -8z + (-9 * -1 + -5z * -1) = -4z
72 + -8z + (9 + 5z) = -4z

Reorder the terms:
72 + 9 + -8z + 5z = -4z

Combine like terms: 72 + 9 = 81
81 + -8z + 5z = -4z

Combine like terms: -8z + 5z = -3z
81 + -3z = -4z

Solving
81 + -3z = -4z

Solving for variable 'z'.

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

Add '4z' to each side of the equation.
81 + -3z + 4z = -4z + 4z

Combine like terms: -3z + 4z = 1z
81 + 1z = -4z + 4z

Combine like terms: -4z + 4z = 0
81 + 1z = 0

Add '-81' to each side of the equation.
81 + -81 + 1z = 0 + -81

Combine like terms: 81 + -81 = 0
0 + 1z = 0 + -81
1z = 0 + -81

Combine like terms: 0 + -81 = -81
1z = -81

Divide each side by '1'.
z = -81

Simplifying
z = -81

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