Bonjour
Calculer et mettre sous forme de fraction irréductible :
A = (8 x 10^15 x 15 x 10^(-6))/(20 x (10^2)^5)
A = (8 x 15 / 20) x 10^(15-6)/10^(2x5)
A = (2 x 4 x 3 x 5)/(4 x 5) x 10^(9-10)
A = 6 x 10^(-1)
A = 6/10
A = (2 x 3)/(2 x 5)
A = 3/5
