10y-9=100

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Solution for 10y-9=100 equation: 


Simplifying
10y + -9 = 100

Reorder the terms:
-9 + 10y = 100

Solving
-9 + 10y = 100

Solving for variable 'y'.

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

Add '9' to each side of the equation.
-9 + 9 + 10y = 100 + 9

Combine like terms: -9 + 9 = 0
0 + 10y = 100 + 9
10y = 100 + 9

Combine like terms: 100 + 9 = 109
10y = 109

Divide each side by '10'.
y = 10.9

Simplifying
y = 10.9

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