slt aidert moi svp c est urgent

bonjour

a = 7/6 +2/3 = 7/6 + 2*2 /3*2 = 7/6 +4/6 = 11/6

b = 4/5 +2/15 = 4*3/5*3 +2/15 = 12/15 +2/15 = 14/15

c = 7/5 +1 = 7/5 + 1*5/1*5 = 7/5+5/5 = 12/5

d = 5+3/2 = 5*2 /1*2 +3/2 = 10/2 +3/2 = 13/2

e = 8/9 -1/3 = 8/9 - 1*3 /3*3 = 8/9 -3*9 = 5/9

f = 3-5/7 = 3*7 /1*7 -5/7 = 21/7 -5/7 = 16/7

g = 13/12 -19/48 =  13*4 /12*4 -19/48 = 52/48 -19/48 = 33/48 = 11*3 /16*3 = 11/16

je te laisse faire la derniere et si tu as des difficultés tu me le dis