A) ( 4,8 : 1 1/15 ) - ( 2 1/4 : 5,4 )=9/2-(9/4:27/5)=9/2-5/12=49/12=4 1/12 B) ( 1,6 - 2/3 ) : ( 1,6 * 2/3 )=(8/5-2/3):(8/5*2/3)=14/15:16/15=7/8 C) - 1,6 : 3 11/15 + 1 3/14= -8/5:56/15+1 3/14= -3/7+17/14=11/14 D) (0,3 + 4/5) : (6 1/15 - 2/3)=11/10:(91/15-2/3)=11/10:27/5=11/54 E) ( 1,25 - 2 2/3) * 6=(5/4-8/3)*6= -17/12*6= -17/2= -8 1/2
a) [latex](4,8: frac{11}{15}) - (2 frac{1}{4} : 5,4) = 6 frac{6}{11} - frac{5}{12} = 6 frac{72}{132} - frac{55}{132} = 6 frac{17}{132}[/latex] b) [latex](1,6 - frac{2}{3}):(1,6 * frac{2}{3}) = frac{14}{15} : 1 frac{1}{15} = frac{7}{8}[/latex] c) [latex]-1,6:3 frac{11}{15} + 1 frac{3}{14} = -frac{3}{7} + 1 frac{3}{14} = -frac{6}{14} + 1 frac{3}{14} = frac{11}{14}[/latex] d) [latex](0,3 + frac{4}{5}) : (6 frac{1}{15} - frac{2}{3}) = 1 frac{1}{10} : 5 frac{2}{5} = frac{11}{54}[/latex] e) [latex](1,25 - 2 frac{2}{3}) * 6 = frac{5}{12} * 6 = 2 frac{1}{2}[/latex]
