Respuesta :

Annyohasayo

Answer:

[tex]a) \: \: e = 11 \: \: and \: \: f = 7 \\ \\ \frac{e + 5}{4f - 4} \\ \\ \frac{11 + 5}{4(7) - 4} \\ \\ \frac{16}{28 - 4} \\ \\ \frac{16}{24} \\ \\ \frac{2}{3} \\ 0.666 \: \: \: ans \: \\ \\ \\ b) \: \: e = - 1 \: \: and \: \: f = - 4 \\ \\ \frac{e + 5}{4f - 4} \\ \\ \frac{ - 1 + 5}{4( - 4) - 4} \\ \\ \frac{ - 1 + 5}{ - 16 - 4} \\ \\ \frac{4}{ - 20} \\ \\ - \frac{1}{5} \\ - 0.2 \: \: ans \: \: [/tex]

Selena328

Step-by-step explanation:

Solution:

a. when e = 11 and f = 7

[tex] \\ \: \: \frac{e + 5}{4f - 4} [/tex]

[tex] \\ = \frac{11 + 5}{4 \times 7 - 4} [/tex]

[tex] \\ = \frac{11 + 5}{28 - 4} [/tex]

[tex] \\ = \frac{16}{24} [/tex]

[tex] \\ = { \cancel \frac{16}{{24}}}[/tex]

[tex] \\ = \frac{2}{3} [/tex]

b. when e = -1 and f = -4

[tex] \\ \: \frac{e + 5}{4f - 4} [/tex]

[tex] \\ = \frac{{ - 1 + 5} }{4( - 4) - 4} [/tex]

[tex] \\ = \frac{ - 1 + 5}{ - 16 - 4} [/tex]

[tex] \\ = \frac{4}{ - 20} [/tex]

[tex] \\ = { \cancel\frac{4}{ - 20}} [/tex]

[tex] \\ = \frac{ - 1}{5} [/tex]

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