5(9-f)=20

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Solution for 5(9-f)=20 equation:


Simplifying
5(9 + -1f) = 20
(9 * 5 + -1f * 5) = 20
(45 + -5f) = 20

Solving
45 + -5f = 20

Solving for variable 'f'.

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

Add '-45' to each side of the equation.
45 + -45 + -5f = 20 + -45

Combine like terms: 45 + -45 = 0
0 + -5f = 20 + -45
-5f = 20 + -45

Combine like terms: 20 + -45 = -25
-5f = -25

Divide each side by '-5'.
f = 5

Simplifying
f = 5

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