Question

1-calcule e dê o resultado na forma de fração
A)
$( - \frac{4}{5}) \: + \: ( - \frac{1}{2} )$
B)
$( - \frac{5}{3} ) - ( - \frac{3}{4} )$
C)
$\frac{3}{4} - 0.25$
D)
$- \frac{3}{15} + 1$
​

Answer 1

a)

$- \frac{4}{5} - \frac{1}{2} = \frac{13}{10}$

b)

$- \frac{5}{3} + \frac{3}{4} = - \frac{11}{12}$

c)

$\frac{3}{4} - \frac{1}{4} = \frac{1}{2}$

d)

$- \frac{1}{5} + 1 = - \frac{1 + 5}{5} = \frac{4}{5}$