Bonjour
Effectuer les calculs suivants en donnant le résultat sous forme d’une fraction irréductible
(11/8 - 3/4) + 4/3
= [(11 x 3) / (8 x 3) - (3 x 6) / (4 x 6)] + (4 x 8) /(3 x 8)
= (33/24 - 18/24) + 32/24
= 15/24 + 32/24
= 47/24
11/8 - 3/4 * 4/3
= 11/8 - 12/12
= 11/8 - 1
= 11/8 - 8/8
= 3/8
4+8/15 -1/5
= (4 x 15) / (1 x 15) + 8/15 - (1 x 3) / (5 x 3)
= 60/15 + 8/15 - 3/15
= 65/15
= (5 x 13) / (5 x 3)
= 13/3
(2/3 - 1/6) + 1/6
=[(2 x 2) / (3 x 2) - 1/6] + 1/6
= (4/6 - 1/6) + 1/6
= 3/6 + 1/6
= 4/6
= (2 x 2) / (2 x 3)
= 2/3
2.4/5*20/6
= 48/30
= (6 x 8) / (6 x 5)
= 8/5
(11/8 - 3/4)*4/3
= [11/8 - (3 x 2) / (4 x 2)] x 4/3
= (11/8 - 6/8) x 4/3
= 5/8 x 4/3
= 20/24
= (4 x 5) / (4 x 6)
= 5/6
5+5/2=
= (5 x 2) / (1 x 2) + 5/2
= 10/2 + 5/2
= 15/2
3*12+3/15
= 36 + 3/15
= (36 x 15) / (1 x 15) + 3/15
= 540/15 + 3/15
= 543/15
= (3 x 181) / (3 x 5)
= 181/5.
