9(2z+1)=81

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Solution for 9(2z+1)=81 equation: 


Simplifying
9(2z + 1) = 81

Reorder the terms:
9(1 + 2z) = 81
(1 * 9 + 2z * 9) = 81
(9 + 18z) = 81

Solving
9 + 18z = 81

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 + 18z = 81 + -9

Combine like terms: 9 + -9 = 0
0 + 18z = 81 + -9
18z = 81 + -9

Combine like terms: 81 + -9 = 72
18z = 72

Divide each side by '18'.
z = 4

Simplifying
z = 4

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