Question

resolva as fraçoes
1 /3 + 1 /4
3 /4 - 2 /3
2 /5 - 1 /3
¨6 /4 - 1 /7 +1 /2
2 /9 + 1 /8 -1 /6
1 /2+3
4-3 3 /4

Answer 1

1° 1/3 + 1/4 =
4/12 + 3/12 =
4 +3 =
7

2° 3/4 - 2/3 =
9/12 - 8/12 =
9 - 8 =
1

3° 2/5 - 1/3 =
6/15 - 5/15 =
6 - 5 =
1
4° 6/4 - 1/7 + 1/2 =
42/28 - 4/28 + 14/28 =
52