3(f+2)/9=13+5f

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Solution for 3(f+2)/9=13+5f equation:


f in (-oo:+oo)

(3*(f+2))/9 = 5*f+13 // - 5*f+13

(3*(f+2))/9-(5*f)-13 = 0

(3*(f+2))/9-5*f-13 = 0

(3*(f+2))/9+(-5*9*f)/9+(-13*9)/9 = 0

3*(f+2)-5*9*f-13*9 = 0

6-42*f-117 = 0

-42*f-111 = 0

(-42*f-111)/9 = 0

(-42*f-111)/9 = 0 // * 9

-42*f-111 = 0

-42*f-111 = 0 // + 111

-42*f = 111 // : -42

f = 111/(-42)

f = -37/14

f = -37/14

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