.9+9y+y=-1

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Solution for .9+9y+y=-1 equation: 


Simplifying
0.9 + 9y + y = -1

Combine like terms: 9y + y = 10y
0.9 + 10y = -1

Solving
0.9 + 10y = -1

Solving for variable 'y'.

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

Add '-0.9' to each side of the equation.
0.9 + -0.9 + 10y = -1 + -0.9

Combine like terms: 0.9 + -0.9 = 0.0
0.0 + 10y = -1 + -0.9
10y = -1 + -0.9

Combine like terms: -1 + -0.9 = -1.9
10y = -1.9

Divide each side by '10'.
y = -0.19

Simplifying
y = -0.19

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