Respuesta :

So,

[tex] \frac{7f}{11} = \frac{7}{11} [/tex]

Multiply both sides by 11.
[tex]7f = 7[/tex]

Divide both sides by 7.
f = 1

Check.
[tex] \frac{7(1)}{11} = \frac{7}{11} [/tex]
[tex] \frac{7}{11} = \frac{7}{11} [/tex] This checks.

S = {1}
7f/11=7/11

Cross-multiply.

(7f)/11=7/11

7f*(11)=(7)*(11)

77f=77

Divide both sides by 77.

77f/77=77/77

f=1