Sagot :
Réponse :
bonjour
Explications étape par étape :
1.
5/8 +7/8
=3x4 / 4x2
=12/8
=3/2
2.
3/7 - 1/14
=614 -1/14
=5/14
3.
1 + 2/9
=9/9 +2/9
=11/9
4.
2/7 + 4/3
=6/21 + 28/21
=34/21
Bonjour,
1)
5 / 8 +7 / 8
= 12/8
= 6/4
= 3/2
2)
3 /7- 1 /14
= 6/14 -1/14
= 5/14
3)
1 + 2 /9
=9/9 +2/9
= 11/9
4) 2/ 7 + 4 / 3
= 6/21+ 28/21
= 34/21