Question

Encontre a soma das seguintes expressões

a) +2/5+ -3/2- -1/4=
b) +1/9- -2/3

Answer 1

Olá!!
a)
2/4 + (- 3/2) - (-1/4) =
2/4 - 6/4 + 1/4 =
-$\frac{3}{4}$
b)
1/9 - (- 2/3) = 
1/9 + 2/3 = 
1/9 + 6/9 = 
$\frac{7}{9}$

Answer 2

a) 2/ 5 - 3 / 2 + 1 / 4

8 / 20 - 30 /20 + 5 / 20
- 22 / 20 + 5 /20
- 17 / 20

b) + 1 / 9 + 2 / 3
1 / 9 + 6 / 9
7 / 9