20z+9=13

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Solution for 20z+9=13 equation: 


Simplifying
20z + 9 = 13

Reorder the terms:
9 + 20z = 13

Solving
9 + 20z = 13

Solving for variable 'z'.

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

Add '-9' to each side of the equation.
9 + -9 + 20z = 13 + -9

Combine like terms: 9 + -9 = 0
0 + 20z = 13 + -9
20z = 13 + -9

Combine like terms: 13 + -9 = 4
20z = 4

Divide each side by '20'.
z = 0.2

Simplifying
z = 0.2

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