4z+20=5z+9

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Solution for 4z+20=5z+9 equation:


Simplifying
4z + 20 = 5z + 9

Reorder the terms:
20 + 4z = 5z + 9

Reorder the terms:
20 + 4z = 9 + 5z

Solving
20 + 4z = 9 + 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 = 9 + 5z + -5z

Combine like terms: 4z + -5z = -1z
20 + -1z = 9 + 5z + -5z

Combine like terms: 5z + -5z = 0
20 + -1z = 9 + 0
20 + -1z = 9

Add '-20' to each side of the equation.
20 + -20 + -1z = 9 + -20

Combine like terms: 20 + -20 = 0
0 + -1z = 9 + -20
-1z = 9 + -20

Combine like terms: 9 + -20 = -11
-1z = -11

Divide each side by '-1'.
z = 11

Simplifying
z = 11

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