Question

resolva as operações:
A) 5 3
---- + ---- =
6 4

B) 1 + 1
---- =
5

C) 1 - 1
---- =
5

D) 3 - 1
---- ---- =
4 8

E) 5 4
---- . ---- =
3 9

F) 6 : 5
---- =
7

Me ajudem ??

Answer 1

A) 5/6 + 3/4 = (5/6+3/4)/12= (10+9)/12 = 19/12
B) 1/5+1/5 = 2/5
C) 1/5-1/5 = 0/5 = 0
D) 3/4 - 1/8 = (3/4 - 1/8)/8 = ( 6 - 1)/8 = 5/8
E) 5/3×4/9 = 20/ 27 =
F) 6/7 : 5/7 = 6/7 × 7/5 = (42/ 35)/ simplificando por 7 fica 6/ 5