Répondre :
A= 5X3/5-15+3X10/3
A= 3-15+10
A= -2
B= 3/5X15X10/3
B=3X10
B=30
C= 3/5X15-4X3/5X10/3
C=9-8
C=1
D= 3+15X10/3
D=3+5X10
D=53
on donne : a=3/5; b=15;c=10/3 calcul A ) 5a-b+3c B) abc C) ab-4ac D)3+bc
A= 5X3/5-15+3X10/3
A= 3-15+10
A= -2
B= 3/5X15X10/3
B=3X10
B=30
C= 3/5X15-4X3/5X10/3
C=9-8
C=1
D= 3+15X10/3
D=3+5X10
D=53