y=100+.90y

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Solution for y=100+.90y equation: 


Simplifying
y = 100 + 0.90y

Solving
y = 100 + 0.90y

Solving for variable 'y'.

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

Add '-0.90y' to each side of the equation.
y + -0.90y = 100 + 0.90y + -0.90y

Combine like terms: y + -0.90y = 0.1y
0.1y = 100 + 0.90y + -0.90y

Combine like terms: 0.90y + -0.90y = 0.00
0.1y = 100 + 0.00
0.1y = 100

Divide each side by '0.1'.
y = 1000

Simplifying
y = 1000

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