Odpowiedź:
2/3*15 = 30/3 = 10 (D)
1/7*35 = 35/7 = 5 (A)
5/9*12 = (5*12)/9 = 60/9 = 20/3 = 6 i 2/3 (L)
0,25*6 = 1/4*6 = 6/4 = 3/2 = 1,5 (Y)
0,6*80 = 6/10*80 = 6 * 8 (skacamy przez 10) = 48 (A)
x * 48 = 12 --> x = 12 / 48 = 1/4 (K)
x * 40 = 6 --> x = 6 / 40 = 3/20 = 15/100 = 0,15 (L)
x * 27 = 9 --> x = 9 / 27 = 1/3 (A)
x * 21 = 14 --> x = 14 / 21 = 2/3 (L)
x* 15 = 3 --> x = 3 / 15 = 1/5 = 0,2 (E)
dalej dasz radę, prawda?
Szczegółowe wyjaśnienie: