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1.
![(frac{1}{2}+ frac{1}{4} )*8 = (frac{2}{4}+ frac{1}{4} )*8 = frac{3}{4} *8= frac{3*8}{4}= 3*2=6 (frac{1}{2}+ frac{1}{4} )*8 = (frac{2}{4}+ frac{1}{4} )*8 = frac{3}{4} *8= frac{3*8}{4}= 3*2=6](https://tex.z-dn.net/?f=+%28frac%7B1%7D%7B2%7D%2B++frac%7B1%7D%7B4%7D+%29%2A8+%3D++%28frac%7B2%7D%7B4%7D%2B++frac%7B1%7D%7B4%7D+%29%2A8++%3D++frac%7B3%7D%7B4%7D+%2A8%3D+frac%7B3%2A8%7D%7B4%7D%3D+3%2A2%3D6)
2.
![2 :2frac{2}{3} +1 frac{4}{5} *3 frac{1}{3} -2 frac{5}{6} = frac{2}{1} :frac{8}{3} + frac{9}{5} *frac{10}{3} - frac{17}{6} =frac{2*3}{1*8} + frac{9*10}{5*3} - frac{17}{6} = \ \= frac{3}{4} + frac{6}{1} - frac{17}{6}=frac{9}{12} + frac{72}{12} - frac{34}{12} = frac{47}{12} = 3 frac{11}{12} 2 :2frac{2}{3} +1 frac{4}{5} *3 frac{1}{3} -2 frac{5}{6} = frac{2}{1} :frac{8}{3} + frac{9}{5} *frac{10}{3} - frac{17}{6} =frac{2*3}{1*8} + frac{9*10}{5*3} - frac{17}{6} = \ \= frac{3}{4} + frac{6}{1} - frac{17}{6}=frac{9}{12} + frac{72}{12} - frac{34}{12} = frac{47}{12} = 3 frac{11}{12}](https://tex.z-dn.net/?f=2+%3A2frac%7B2%7D%7B3%7D+%2B1+frac%7B4%7D%7B5%7D+%2A3+frac%7B1%7D%7B3%7D+-2+frac%7B5%7D%7B6%7D+%3D+frac%7B2%7D%7B1%7D++%3Afrac%7B8%7D%7B3%7D+%2B+frac%7B9%7D%7B5%7D+%2Afrac%7B10%7D%7B3%7D+-+frac%7B17%7D%7B6%7D+%3Dfrac%7B2%2A3%7D%7B1%2A8%7D+%2B+frac%7B9%2A10%7D%7B5%2A3%7D++-+frac%7B17%7D%7B6%7D+%3D++%5C+%5C%3D+frac%7B3%7D%7B4%7D+%2B+frac%7B6%7D%7B1%7D++-+frac%7B17%7D%7B6%7D%3Dfrac%7B9%7D%7B12%7D+%2B+frac%7B72%7D%7B12%7D++-+frac%7B34%7D%7B12%7D+%3D++frac%7B47%7D%7B12%7D+%3D+3+frac%7B11%7D%7B12%7D+)
2.
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