f(x)=2x+5x

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Solution for f(x)=2x+5x equation: 


Simplifying
f(x) = 2x + 5x

Multiply f * x
fx = 2x + 5x

Combine like terms: 2x + 5x = 7x
fx = 7x

Solving
fx = 7x

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 7

Simplifying
f = 7

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