Question

Simplifique as frações algébricas.
a)
$8c \\ 4a$
b)
$4c ^{2} \\ 6c^{3}$
c)
$abc \\ cd$
d)
$- 7a^{3} c \\ - 21ac^{5}$
URGENTE!!!

Answer 1

A)

$\frac{8c}{4a} = \frac{8c \div 4}{4a \div 4} = \frac{2c}{a}$

B)

$\frac{4 {c}^{2} }{6 {c}^{3} } = \frac{4( {c)}^{2} \div 2 }{6c {(c)}^{2} \div 2 } = \frac{2}{3c}$

C)

$\frac{abc}{cd} = \frac{ab}{d}$

D)

$\frac{ - 7a^{3}c }{ - 21a {c}^{5} } = \frac{ - 7 {a}^{3} c \div - 7}{ - 21a {c}^{5} \div - 7} = \frac{ {a}^{3}c }{3a {c}^{5} } = \frac{ {a}^{2} c}{3 {c}^{5} } = \frac{ {a}^{2} }{3 {c}^{4} }$