f(x)+1=81

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Solution for f(x)+1=81 equation: 


Simplifying
f(x) + 1 = 81

Multiply f * x
fx + 1 = 81

Reorder the terms:
1 + fx = 81

Solving
1 + fx = 81

Solving for variable 'f'.

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

Add '-1' to each side of the equation.
1 + -1 + fx = 81 + -1

Combine like terms: 1 + -1 = 0
0 + fx = 81 + -1
fx = 81 + -1

Combine like terms: 81 + -1 = 80
fx = 80

Divide each side by 'x'.
f = 80x-1

Simplifying
f = 80x-1

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