20-4z=5z-25

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Solution for 20-4z=5z-25 equation:


Simplifying
20 + -4z = 5z + -25

Reorder the terms:
20 + -4z = -25 + 5z

Solving
20 + -4z = -25 + 5z

Solving for variable 'z'.

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

Add '-5z' to each side of the equation.
20 + -4z + -5z = -25 + 5z + -5z

Combine like terms: -4z + -5z = -9z
20 + -9z = -25 + 5z + -5z

Combine like terms: 5z + -5z = 0
20 + -9z = -25 + 0
20 + -9z = -25

Add '-20' to each side of the equation.
20 + -20 + -9z = -25 + -20

Combine like terms: 20 + -20 = 0
0 + -9z = -25 + -20
-9z = -25 + -20

Combine like terms: -25 + -20 = -45
-9z = -45

Divide each side by '-9'.
z = 5

Simplifying
z = 5

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