Sagot :
Salut,
A = 2/3 - 2/3 * 9/5
A = 2/3 - 18/15
A = 10/15 - 18/15
A = -8/15
B = [ 1/6 - 1/3 ] / [ 2/5 * 3/4 ]
B = [ 1/6 - 2/6 ] / 6/20
B = (-1/6) / 3/10
B= -1/6 * 10/3
B= -10/18
B = -5/9
Bonne continuation.
A=2/3-2/3x9/5=2/3-6/15=10/15-6/15=4/15
B=(1/6-1/3):(2/5x3/4)=(1/6-2/6):(6/20)=(-1/6)x(20/6)=(-20/120)=(-2/12)=(-1/6)
Voila bonne soirée
By Vetteliste