Sagot :

inequation

Bonjour,

Calculer:

C= (5/7-2/3) (1/5-9/2)

C= [(5x3-2x7)/ (7x3)] / [(1x2-9x5)/ (5x2) ]

C= (15-14)/21)(2-45)/10)

C= (1/21)(-43/10)

C= (1x-43)/(21x10)

C= -43/210