Question

18 11/12-4 5/9-5 1/6+4 1/4

Answer 1

18  11/12-4  5/9- 5  1/6  +  4  1/4= 14   13/36 - 5   6/36  +  4   9/36  = 13  16/36=  13   4/9

Answer 2

$18frac{11}{12}-4frac{5}{9}-5frac{1}{6}+4frac{1}{4}=13frac{4}{9}$

 

1) $18frac{11}{12}-4frac{5}{9}=frac{227}{12}-frac{41}{9}=frac{681-164}{36}=frac{517}{36}=14frac{13}{36}$

 

2) $14frac{13}{36}-5frac{1}{6}=frac{517}{36}-frac{31}{6}=frac{517-186}{36}=frac{331}{36}=9frac{7}{36}$

 

3) $9frac{7}{36}+4frac{1}{4}=frac{331}{36}+frac{17}{4}=frac{331+153}{36}=frac{484}{36}=frac{121}{9}=13frac{4}{9}$