Question

Caclulati
2 - 3, (2) = ?
_
5

Answer 1

2/5-(32-3)/9=2/5-29/9=18/45-145/45= (18-145)/45=-127/45=-2,8(2)

Answer 2

$\dfrac{2}{5} - 3,(2) = \dfrac{2}{5} - \dfrac{32-3}{9} = ^{\Big{9)}}\dfrac{2}{5} - ^{\Big{5)}}\dfrac{29}{9} = \dfrac{9\cdot 2}{45}-\dfrac{5\cdot 29}{45} = \dfrac{18-145}{45} = \\ \\ = -\dfrac{127}{45} = -2,8(2)$