f(y)=y+3y-4

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Solution for f(y)=y+3y-4 equation: 


Simplifying
f(y) = y + 3y + -4

Multiply f * y
fy = y + 3y + -4

Reorder the terms:
fy = -4 + y + 3y

Combine like terms: y + 3y = 4y
fy = -4 + 4y

Solving
fy = -4 + 4y

Solving for variable 'f'.

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

Divide each side by 'y'.
f = -4y-1 + 4

Simplifying
f = -4y-1 + 4

Reorder the terms:
f = 4 + -4y-1

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