7-5/4...... 2+1/3....... le quart de 10/7...... le triple de 1/3........... exprimer sous formes de fraction simplifiée

7-5/4 = (7*4)/4 - 5/4 = 28/4 - 5/4 =23/4
2 + 1/3 = (2*3)/3 + 1/3 = 6/3 + 1/3 = 7/3
(10/7)/4 = 10/7 * 1/4 = 10/24 = 5/12
(1/3)*3= 3/3 = 1