z*10-9=8

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Solution for z*10-9=8 equation:


Simplifying
z * 10 + -9 = 8

Reorder the terms for easier multiplication:
10z + -9 = 8

Reorder the terms:
-9 + 10z = 8

Solving
-9 + 10z = 8

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 + 10z = 8 + 9

Combine like terms: -9 + 9 = 0
0 + 10z = 8 + 9
10z = 8 + 9

Combine like terms: 8 + 9 = 17
10z = 17

Divide each side by '10'.
z = 1.7

Simplifying
z = 1.7

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