Efetue as operações com frações (Justifique a resposta com cálculos )
a) 3/2 + 2/3
b) 7/12+11/20
c) 5/8-1/4
d) 4/5-2/3
Respostas
respondido por:
2
a) 3/2 + 2/3 = ----mmc(2,3)=6
9/6 + 4/6 = 13/6
b) 7/12+11/20 = ---mmc(12,20) = 60
35/60 + 33/60 = 68/60 = 34/30= 17/15
c) 5/8-1/4= ---mmc(4,8)= 8
5/8 - 2/8 = 3/8
d) 4/5-2/3 =---mmc(3,5) = 15
12/15 - 10/15 = 2/15
9/6 + 4/6 = 13/6
b) 7/12+11/20 = ---mmc(12,20) = 60
35/60 + 33/60 = 68/60 = 34/30= 17/15
c) 5/8-1/4= ---mmc(4,8)= 8
5/8 - 2/8 = 3/8
d) 4/5-2/3 =---mmc(3,5) = 15
12/15 - 10/15 = 2/15
Perguntas similares
7 anos atrás
9 anos atrás
9 anos atrás