1/2f-4=1

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Solution for 1/2f-4=1 equation: 


f in (-oo:+oo)

(1/2)*f-4 = 1 // - 1

(1/2)*f-4-1 = 0

1/2*f-5 = 0 // + 5

1/2*f = 5 // : 1/2

f = 5/1/2

f = 10

f = 10

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