9z-11=5z+21

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Solution for 9z-11=5z+21 equation:


Simplifying
9z + -11 = 5z + 21

Reorder the terms:
-11 + 9z = 5z + 21

Reorder the terms:
-11 + 9z = 21 + 5z

Solving
-11 + 9z = 21 + 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.
-11 + 9z + -5z = 21 + 5z + -5z

Combine like terms: 9z + -5z = 4z
-11 + 4z = 21 + 5z + -5z

Combine like terms: 5z + -5z = 0
-11 + 4z = 21 + 0
-11 + 4z = 21

Add '11' to each side of the equation.
-11 + 11 + 4z = 21 + 11

Combine like terms: -11 + 11 = 0
0 + 4z = 21 + 11
4z = 21 + 11

Combine like terms: 21 + 11 = 32
4z = 32

Divide each side by '4'.
z = 8

Simplifying
z = 8

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