Efetue as seguintes operações: a)5:4-3:6=
b)3:5+2:7=
c)9:3-6:12=
d)5:12-3:15=
e)6:8+2:4=
f)3:8+5:10=
g)6:4-3:10=
h)8:2+1:3-3:4=
I)6:5-3:4+2:6=
j)3:6+2:4-7:10=
Respostas
pocha mano
nunca vir isso não
Resposta:
a) 5/4 - 3/6 b) 3/5 + 2/7 c) 9/3 - 6/12 d) 5/12 - 3/15
5.3/4.3 - 3.2/6.2 3.7/5.7 + 2.5/7.5 9.4/3.4 - 6/12 5.5/12.5 - 3.4/15.4
15/12 - 6/12 21/35 + 10/35 36/12 - 6/12 25/60 - 12/60
9/12 = 3/4 31/35 30/12 = 15/6 13/60
e) 6/8 + 2/4 f) 3/8 + 5/10 g) 6/4 - 3/10
6.2/8.2 + 2.4/4.4 3.5/8.5 + 5.4/10.4 6.5/4.5 - 3.2/10.2
12/16 + 8/16 15/40 + 20/40 30/20 - 6/20
20/16 = 10/8 = 5/4 35/40 = 7/8 24/20 = 12/10 = 6/5
h) 8/2 + 1/3 - 3/4 I) 6/5 - 3/4 + 2/6
8.6/2.6 + 1.4/3.4 - 3.3/4.3 6.12/5.12 - 3.15/4.15 + 2.10/6.10
48/12 + 4/12 - 9/12 72/60 - 45/60 + 20/60
52/12 - 9/12 27/60 + 20/60
43/12 47/60
j) 3/6 + 2/4 - 7/10
3.10/6.10 + 2.15/4.15 - 7.6/10.6
30/60 + 30/60 - 42/60
60/60 - 42/60
18/60 = 9/30 = 3/10
Ps. Espero ter ajudado, qualquer dúvida pode comentar ai em baixo. Bons estudos!!!