Question

gente, preciso que vcs me ajudem a resolver essas questões:
a) (+1/9)+(-2/9)
b) (-9,6) - (-2,5)
c) (-7/30) + (+4/30) + (-11/30)
d) (-4,1) + (15,2)
e) (+2/3) + (-1/8)
f) (-1/5) - (+2/3) - (-1/4)
**********************POR FAVOR É URGENTEEE*******************

Answer 1

Resposta:

Explicação passo-a-passo:

a) (+1/9)+(-2/9)

$\frac{1}{9} -\frac{2}{9} = \frac{-1}{9}$

b) (-9,6) - (-2,5)

$\frac{-9}{6} +\frac{2}{5} = \frac{-45+12}{30} =\frac{-33}{30}$

c) (-7/30) + (+4/30) + (-11/30)

$\frac{-7}{30}+ \frac{4}{30}- \frac{11}{30} = \frac{-14}{30} =\frac{7}{15}$

d) (-4,1) + (15,2)

$15,2-4,1=11,1$

e) (+2/3) + (-1/8)

$\frac{2}{3} -\frac{1}{8} =\frac{16-3}{24} =\frac{13}{24}$

f) (-1/5) - (+2/3) - (-1/4)

$\frac{-1}{5}- \frac{2}{3}+ \frac{1}{4} =\frac{-12-40+15}{60} =\frac{-17}{60}$