f(20)=2(20)-18

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Solution for f(20)=2(20)-18 equation: 


Simplifying
f(20) = 2(20) + -18

Reorder the terms for easier multiplication:
20f = 2(20) + -18

Multiply 2 * 20
20f = 40 + -18

Combine like terms: 40 + -18 = 22
20f = 22

Solving
20f = 22

Solving for variable 'f'.

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

Divide each side by '20'.
f = 1.1

Simplifying
f = 1.1

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