yt=-3yt-1+20

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Solution for yt=-3yt-1+20 equation: 


Simplifying
yt = -3yt + -1 + 20

Reorder the terms:
ty = -1 + 20 + -3ty

Combine like terms: -1 + 20 = 19
ty = 19 + -3ty

Solving
ty = 19 + -3ty

Solving for variable 't'.

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

Add '3ty' to each side of the equation.
ty + 3ty = 19 + -3ty + 3ty

Combine like terms: ty + 3ty = 4ty
4ty = 19 + -3ty + 3ty

Combine like terms: -3ty + 3ty = 0
4ty = 19 + 0
4ty = 19

Divide each side by '4y'.
t = 4.75y-1

Simplifying
t = 4.75y-1

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