Bonjour,
-5/2 +2/3 = -15/6 + 4/6
= -11/6
-3/5 -1/4
= -12/20 - 5/20
= -17/20
( -11/6)/ -(17/20)
= -11/6 * -20/17
= 220/ 102
= 110/ 51
Calculer:
(-5/2 + 2/3) : (-3/5 - 1/4)= (-5x3+2x2)/(2x3) : (-3x4-1x5)/(5x4)
= (-15+4)/6 : (-12-5)/20= (-11/6) : (-17/20)
= (11/6)(20/17)= simplifié 6 et 20 et les signes -/ - = +
= (11/3)(10/17)= (11x10)/(3x17)
= 110/51
