aides moi SVP : simplifier l écriture des fractions suivantes 25/75 -64/-16 52/78 -1,5/7,5 5/7-2/7x6/8 3/2x(-5/3-7/9)

bonsoir

25/75 = 1/3

- 64/ -16 =  4

52/78 = 2/3

- 1.5/ 7.5 = - 15/75 = - 1/5

5/7 - 12/56 = 40/56 - 12/56 = 28/ 56= 1/2

3/2 * ( - 5/3 -  7/9) =  3/2 * ( - 15/9 - 7/9)
= 3/2 * - 22/9 = - 66/18= - 11/3