Question

3,212:4/5=                        43,75.  2/35=   1,5/3,2  +  1,9/9,6=

Answer 1

1)3.212*5/4=4.015

2)43.75*2/35=1.25*2=2.5

3)15/32+19/96=64/96=2/3

Answer 2

$3,212:frac{4}{5}=3,212:0,8=4,015$

 

$43,75cdotfrac{2}{35}=frac{43,75cdot2}{35}=frac{87,5}{35}=2,5$

 

$1,5:3,2+1,9:9,6=frac{2}{3}$

 

1) $1,5:3,2=1frac{5}{10}:3frac{2}{10}=1frac{1}{2}:3frac{1}{5}=frac{3}{2}:frac{16}{5}=frac{3}{2}cdotfrac{5}{16}=frac{15}{32}$

 

2) $1,9:9,6=1frac{9}{10}:9frac{6}{10}=frac{19}{10}:9frac{3}{5}=frac{19}{10}:frac{48}{5}=frac{19}{10}cdotfrac{5}{48}=frac{19}{96}$

 

3) $frac{15}{32}+frac{19}{96}=frac{45+19}{96}=frac{64}{96}=frac{2}{3}$