Question

Cum se calculeaza intregii? De exemplu:4 intreg 1 supra 6 minus 1 intreg 1 supra 9 

Answer 1

4*1/6 - 1*1/9 = 
= (4*6+1)/6 - (1*9+1)/9
= 25/6 - 10/9
= (75 - 20)/18
= 55/18

Answer 2

$4\dfrac{1}{6}-1\dfrac{1}{9} = \dfrac{4\cdot 6+1}{6}-\dfrac{1\cdot 9+1}{9} = \dfrac{25}{6}-\dfrac{10}{9} = \dfrac{3\cdot 25}{3\cdot 6}-\dfrac{2\cdot 10}{2\cdot 9} = \\ \\= \dfrac{75}{18}-\dfrac{20}{18} = \dfrac{75-20}{18} = \dfrac{55}{18}$