Question

efetue, as frações simplificando quando for possivel.
1/2-1/3+5/6-3/4=
8/9x45/4=
1/2x10
1/5:4/7=

Answer 1

Boa tarde

1/2 - 1/3 + 5/6 - 3/4 

6/12 - 4/12 + 10/12 - 9/12 

16/12 - 13/12 = 3/12 = 1/4 

8/9 * 45/4 = 8*45/9*4 = 2*5 = 10 

1/2 * 10 = 10/2 = 5 

(1/5)/(4/7) = (1/5)*(7/4) = 7/20