Svp aidez moi je suis nulle en maths et je dois simplifier ça pour maintenant

Bonsoir,

- 5/8 - - 7/24 - 1/6 
= - 5/8 + 7/24 - 1/6
= - 5 x 3 / 8 x 3 + 7/24 - 1 x 4 / 6 x 4
= - 15/24 + 7/24 - 4/24
= - 19/24 + 7/24
= - 12/24
= 12 x - 1 / 12 x 2
= - 1/2

4/5 + - 2/3 + 9/10 - 5/6
= 4/5 - 2/3 + 9/10 - 5/6
= 4 x 6 / 5 x 6 - 2 x 10 / 3 x 10 + 9 x 3 / 10 x 3 - 5 x 5 / 6 x 5
= 24/30 - 20/30 + 27/30 - 25/30
= 51/30 - 45/30
= 6/30
= 6 x 1 / 6 x 5
= 1/5

3/8 - (7/3 - 3/4)
= 3/8 - (7 x 9 / 3 x 8 - 3 x 6 / 4 x 6)
= 3 x 3 / 8 x 3 - (63/24 - 18/24)
= 9/24 - (- 81/24)
= 9/24 + 81/24
= 90/24
= 6 x 15 / 6 x 4
= 15/4

1/2 - (- 8/15 + 6/5)
= 1 x 15 / 2 x 15 - (- 8 x 2 / 15 x 2 + 6 x 6 / 5 x 6)
= 15/30 - (- 16/30 + 36/30)
= 15/30 - 20/30
= - 5/30
= 5 x - 1 / 5 x 6
= - 1/6