6-7/9f=-1

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Solution for 6-7/9f=-1 equation: 


f in (-oo:+oo)

6-((7/9)*f) = -1 // + 1

1-((7/9)*f)+6 = 0

(-7/9)*f+1+6 = 0

7-7/9*f = 0 // - 7

-7/9*f = -7 // : -7/9

f = -7/(-7/9)

f = 9

f = 9

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