13z-31=9

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Solution for 13z-31=9 equation: 


Simplifying
13z + -31 = 9

Reorder the terms:
-31 + 13z = 9

Solving
-31 + 13z = 9

Solving for variable 'z'.

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

Add '31' to each side of the equation.
-31 + 31 + 13z = 9 + 31

Combine like terms: -31 + 31 = 0
0 + 13z = 9 + 31
13z = 9 + 31

Combine like terms: 9 + 31 = 40
13z = 40

Divide each side by '13'.
z = 3.076923077

Simplifying
z = 3.076923077

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