2.5+2z=9

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Solution for 2.5+2z=9 equation: 


Simplifying
2.5 + 2z = 9

Solving
2.5 + 2z = 9

Solving for variable 'z'.

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

Add '-2.5' to each side of the equation.
2.5 + -2.5 + 2z = 9 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + 2z = 9 + -2.5
2z = 9 + -2.5

Combine like terms: 9 + -2.5 = 6.5
2z = 6.5

Divide each side by '2'.
z = 3.25

Simplifying
z = 3.25

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