Question

calcule as somas e subtraçoes com a s fraçoes simplificando quando for possivel 5/2 7/3 , 4/5 -2/3 , 8/-2/7 3/2 , 8/3-1/5 me ajudem preciso para amanha por favor

Answer 1

4/5-2/3=4/5-2/3=4•3/5•3 - 2•5/3•5=12/15-10/15=12-10/15=2/15=0,133...


8/3-1/5=8/3-1/5=8•5/3•5 - 1•3/5•3=40/15 - 3/15= 40-3/15=37/15= 2 7/5=2,466...