[tex] \frac{90}{13} - \frac{18}{6} - \frac{6}{13} = [/tex]
13 , 6 | 2
13 , 3 | 3
13 , 1 | 13
1 , 1 MMC 2×3×13 =
MMC 6× 13 = 78
[tex] \frac{540 - 234 - 36}{78} = [/tex]
[tex] \frac{540 - 270}{78} = [/tex]
[tex] \frac{270( \div 2)}{78( \div 2)} = [/tex]
[tex] \frac{135( \div 3)}{39( \div 3)} = [/tex]
[tex] \frac{45 }{13} = 3.46[/tex]
