Sagot :

carlx7970

A= 3/4-5/8

A= 6+5/8

A=1/8

B= 37/40+3/5

B= 37+24/40

B= 61/40

C= 37/42-4/8

C= 37/42-1/2

C= 37-21/42

C= 16/42

C= 8/21

voilà