Question

gente duvida:
com conta de der

Answer 1

a-> $- \frac{8}{32} = - \frac{8:8}{32:8} = - \frac{1}{4}$

b-> $+ \frac{15}{32100} = - \frac{15:5}{100:5} = + \frac{3}{20}$

c-> $+ \frac{35}{55} = - \frac{35:5}{55:5} = + \frac{7}{11}$

d-> $+ \frac{9}{63} = - \frac{9:9}{63:9} = +\frac{1}{7}$