f(x)=21x+13

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Solution for f(x)=21x+13 equation: 


Simplifying
f(x) = 21x + 13

Multiply f * x
fx = 21x + 13

Reorder the terms:
fx = 13 + 21x

Solving
fx = 13 + 21x

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 13x-1 + 21

Simplifying
f = 13x-1 + 21

Reorder the terms:
f = 21 + 13x-1

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