5z-15=6

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Solution for 5z-15=6 equation: 


Simplifying
5z + -15 = 6

Reorder the terms:
-15 + 5z = 6

Solving
-15 + 5z = 6

Solving for variable 'z'.

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

Add '15' to each side of the equation.
-15 + 15 + 5z = 6 + 15

Combine like terms: -15 + 15 = 0
0 + 5z = 6 + 15
5z = 6 + 15

Combine like terms: 6 + 15 = 21
5z = 21

Divide each side by '5'.
z = 4.2

Simplifying
z = 4.2

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