Question

RESOLVA AS OPERAÇÃES ABAIXO:SIMPLIGIQUE SE POSSÍVEL.

a) (-8/7) + (-1/5)

b(2/9) + (-3/10)

c)(-5/8) + (-2/5)

d)(-3/4) + (+9/6)

e)(-8/9) . (+4/3)

galera e pra amanhã pvffff me ajudemm

Answer 1

a) $-\frac{5}{8} +(-\frac{1}{5} )= \frac{-24-8}{40} = -\frac{32}{40}$

Simplificando: $- \frac{32}{40} = -\frac{4}{5}$

b) $\frac{2}{9} + (- \frac{3}{10} )= \frac{20-27}{90} = -\frac{7}{90}$

c) $-\frac{5}{8} + (-\frac{2}{5})= \frac{-25-16}{40} = -\frac{41}{40}$

d) $-\frac{3}{4} + \frac{9}{6} = \frac{-9+18}{12} = \frac{9}{12}$

Simplificando: $\frac{9}{12}= \frac{3}{4}$

e) $- \frac{8}{9} \cdot \frac{4}{3} =- \frac{32}{27}$