Calculer chaque expression et écrire chaque étape : A=(2/3)+(5/3)*(4*7) B=(1/5)-(7/5)*(2/3) C=(7/3)-(4/3)/(5/2) D=[4-(1/3)]+(5/4)

A=(2/3)+(5/3)*(4*7)

A=(2/3)+(20/21)

A=(14/21)+(20/21)

A=34/21

B=(1/5)-(7/5)*(2/3)

B=(1/5)-(14/15)

B=(3/15)-(14/15)

B=-11/15

C=(7/3)-(4/3)/(5/2)

C=(7/3)-(4/3)*(2/5)

C=(7/3)-(8/15)

C=(35/15)-(8/15)

C=27/15

C=9/5

D=[4-(1/3)]+(5/4)

D=[(4/1)-(1/3)]+(5/4)

D=[(12/3)-(1/3)]+(5/4)

D=11/3+5/4

D=44/12+15/12

D=59/12