Question

calcule as operações com as frações:

Answer 1

a)1/12+3/4= 40/48(dividindo por 4)=10/12(divivindo por 2)=5/6
5/6+4/3=39/18(dividindo por 3)=13/6
13/6-2=1/6
b)-5/2 x -10/7 = -5 x-10=50
    2 x 7 =14
  50/14
c)1/2 / 2/3 = 1/2 x 3/ 2 = 3/4
3/4 x 1/4 = 3/16 
d) 1/2 +1/3 =5/6
5/6 +1/4 =26/24
2/3+2/4 =14/12
9/17+1=26/17
5/6 / 14/12 = 5/6 x 12/14 = 60/84
60/84 / 26/17 = 60/84 x 17/26 =1020/2184(dividindo por 4)=
255/546