Bonsoir
calculer les expressions suivantes
A= 7/3-4/3÷8/5
A = 7/3 - 4/3 x 5/8
A = 7/3 - 4/8 x 5/3
A = 7/3 - 4/(2 x 4) x 5/3
A = 7/3 - 1/2 x 5/3
A = (7 x 2)/(3 x 2) - 5/6
A = 14/6 - 5/6
A = 9/6
A = (3 x 3)/(2 x 3)
A = 3/2
B=-4/9x1/5÷3/7
B = -4/45 x 7/3
B = -28/135
C= - 8/3÷-5/6+7/4
C = -8/3 x -6/5 + 7/4
C = 48/15 + 7/4
C = (48 x 4)/(15 x 4) + (7 x 15)/(4 x 15)
C = 192/60 + 105/60
C = 297/60
C = (3 x 99)/(3 x 20)
C = 99/20
