f(x)=8x+4(5+x)

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Solution for f(x)=8x+4(5+x) equation: 


Simplifying
f(x) = 8x + 4(5 + x)

Multiply f * x
fx = 8x + 4(5 + x)
fx = 8x + (5 * 4 + x * 4)
fx = 8x + (20 + 4x)

Reorder the terms:
fx = 20 + 8x + 4x

Combine like terms: 8x + 4x = 12x
fx = 20 + 12x

Solving
fx = 20 + 12x

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 20x-1 + 12

Simplifying
f = 20x-1 + 12

Reorder the terms:
f = 12 + 20x-1

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