Question

1)сократите дроби 
а) 2*35*18
   9*14*40
б)  19*8*5*11
     22*4*20*19
в)  15* 13* 6
     6*9*5*26

Answer 1

$frac{2cdot35cdot18}{9cdot14cdot40} = frac{1cdot7cdot2}{1cdot7cdot8} = frac{1cdot1cdot1}{1cdot1cdot4} = frac{1}{4}, \ frac{19cdot8cdot5cdot11}{22cdot4cdot20cdot19} = frac{1cdot2cdot1cdot1}{11cdot1cdot4cdot1} = frac{1cdot1cdot1cdot1}{11cdot1cdot2cdot1} = frac{1}{22}, \ frac{15cdot13cdot6}{6cdot9cdot5cdot26} = frac{3cdot1cdot1}{1cdot9cdot1cdot2} = frac{1cdot1cdot1}{1cdot3cdot1cdot2} = frac{1}{6} .$