8z-9+12z=71

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Solution for 8z-9+12z=71 equation:


Simplifying
8z + -9 + 12z = 71

Reorder the terms:
-9 + 8z + 12z = 71

Combine like terms: 8z + 12z = 20z
-9 + 20z = 71

Solving
-9 + 20z = 71

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 = 71 + 9

Combine like terms: -9 + 9 = 0
0 + 20z = 71 + 9
20z = 71 + 9

Combine like terms: 71 + 9 = 80
20z = 80

Divide each side by '20'.
z = 4

Simplifying
z = 4

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