Question

Números racionais com MMC
pppppoooooooooooooooorrrrrrrrrrrrrr         fffffffffffaaaaaavvvvvvoooooorrrrrrrr

a)(+1/2) + (+3/5)
b)(+2/5) + (-5/4)
c)(-1/5) + (+1/3)
d)(-4/9) + (-2/3)
e)(-1/4) + (-1/2)                 por favor me ajudem!!!!

Answer 1

a1/2 + 3/5
11/10
b2/5-5/4
8-25/20
17/20
c-1/5+1/3
3+5/15
8/15
d-4/9 -2/3
-2/9
e-1/4 -1/2
-1/4