Question

RESOLVA A número 48 pfvr é para amanhã e eu não entendi

Answer 1

48)-

a) 1/2 - 1/3=? (Mmc 2,3=6)

3/6 - 2/6= 1/6

1/6:2=1/3.

b) 5/6 - 1/3=? (Mmc 3,6=6)

5/6 - 2/6=3/6

3/6:3--->3:3(1);6:3(2)=1/2.

c)4/5 - 2/7=? (Mmc 5,7=35)

28/35 - 10/35=18/35.

d) 7/8 - 1/6=? (Mmc 6,8=24)

21/24 - 4/24=17/24.

e) 5/4 - 1/2=? (Mmc 2,4=4)

5/4 - 2/4=3/4.

f) 8/10 - 1/5=? (Mmc 5,10=10)

8/10 - 2/10=6/10.

6/10:2=6:2(3);10:2(5)=3/5.