20=5z-8-z

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Solution for 20=5z-8-z equation:


Simplifying
20 = 5z + -8 + -1z

Reorder the terms:
20 = -8 + 5z + -1z

Combine like terms: 5z + -1z = 4z
20 = -8 + 4z

Solving
20 = -8 + 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.
20 + -4z = -8 + 4z + -4z

Combine like terms: 4z + -4z = 0
20 + -4z = -8 + 0
20 + -4z = -8

Add '-20' to each side of the equation.
20 + -20 + -4z = -8 + -20

Combine like terms: 20 + -20 = 0
0 + -4z = -8 + -20
-4z = -8 + -20

Combine like terms: -8 + -20 = -28
-4z = -28

Divide each side by '-4'.
z = 7

Simplifying
z = 7

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