Question

Calculati :
2 supra 5 × 2 supra 7 =
3 supra 8 ×3 supra 12 =
4 supra 6 × 4 supra 7 =
5 supra 20 :5 supra 15 =
6 supra 31 : 6 supra 11 =

Answer 1

2/5x2/7= 2x2/5x7 =4/35
3/8x3/9= 1x3/8x3=3/24 ( am simplificat 3 cu 9 si a ramas 1 si 3)
4/6x4/7=4x3/2x7=12/14 (același lucru, am simplificat 4 cu 6)
5/20:5/15= 5/20x15/5=1/4x3/5=1x4/3x5=4/15
6/31:6/11==6/31x11/6=1/31x11/1=1x31/11x1=31/11

Sper ca te-am ajutat.