Răspuns:
x < y
Explicație pas cu pas:
x = [0,8(3) - 1,5]
x = (83-8)/90 - 15/10 = 75/90⁽¹⁵ - 15/10⁽⁵
x = 5/6 - ³⁾3/2 = (5-9)/6 = -4/6⁽² = -2/3
x = -2/3
y = [1,(6) – 2,25]
y = (16-1)/9 - 225/100⁽²⁵
y = 15/9⁽³ - 9/4 = ⁴⁾5/3 - ³⁾9/4 = (20-27)/12 = -7/12
y = -7/12
⁴⁾-2/3 si -7/12 <=> -8/12 si -7/12
-8 < -7 => -8/12 < -7/12 => -2/3 < -7/12 => x < y
