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1) ![3 frac{1}{4} :13= frac{13}{4*13} = frac{1}{4} 3 frac{1}{4} :13= frac{13}{4*13} = frac{1}{4}](https://tex.z-dn.net/?f=3+frac%7B1%7D%7B4%7D+%3A13%3D+frac%7B13%7D%7B4%2A13%7D+%3D+frac%7B1%7D%7B4%7D+)
2)![frac{1}{4} : frac{2}{3} = frac{1}{4} * frac{3}{2} = frac{1*3}{4*2}=frac{3}{8} frac{1}{4} : frac{2}{3} = frac{1}{4} * frac{3}{2} = frac{1*3}{4*2}=frac{3}{8}](https://tex.z-dn.net/?f=+frac%7B1%7D%7B4%7D+%3A+frac%7B2%7D%7B3%7D+%3D+frac%7B1%7D%7B4%7D+%2A+frac%7B3%7D%7B2%7D+%3D+frac%7B1%2A3%7D%7B4%2A2%7D%3Dfrac%7B3%7D%7B8%7D+)
3)![2:3 frac{1}{5} =2: frac{16}{5} = frac{2*5}{16} = frac{5}{8} 2:3 frac{1}{5} =2: frac{16}{5} = frac{2*5}{16} = frac{5}{8}](https://tex.z-dn.net/?f=2%3A3+frac%7B1%7D%7B5%7D+%3D2%3A+frac%7B16%7D%7B5%7D+%3D+frac%7B2%2A5%7D%7B16%7D+%3D+frac%7B5%7D%7B8%7D+)
4)![frac{5}{8} + frac{3}{8} =1 frac{5}{8} + frac{3}{8} =1](https://tex.z-dn.net/?f=+frac%7B5%7D%7B8%7D+%2B+frac%7B3%7D%7B8%7D+%3D1)
5)![2 frac{5}{18}- frac{17}{36}=1 frac{46-17}{36} =1 frac{29}{36} 2 frac{5}{18}- frac{17}{36}=1 frac{46-17}{36} =1 frac{29}{36}](https://tex.z-dn.net/?f=2+frac%7B5%7D%7B18%7D-+frac%7B17%7D%7B36%7D%3D1+frac%7B46-17%7D%7B36%7D+%3D1+frac%7B29%7D%7B36%7D)
6)![1 frac{29}{36} * frac{18}{65} = frac{65*18}{36*65} = frac{1}{2} 1 frac{29}{36} * frac{18}{65} = frac{65*18}{36*65} = frac{1}{2}](https://tex.z-dn.net/?f=1+frac%7B29%7D%7B36%7D+%2A+frac%7B18%7D%7B65%7D+%3D+frac%7B65%2A18%7D%7B36%2A65%7D+%3D+frac%7B1%7D%7B2%7D+)
7)![1+frac{1}{2} =1 frac{1}{2} 1+frac{1}{2} =1 frac{1}{2}](https://tex.z-dn.net/?f=+1%2Bfrac%7B1%7D%7B2%7D+%3D1+frac%7B1%7D%7B2%7D+)
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![](https://st.uroker.com/files/aea/aea7cd8898c1a9fe73de640d0d22b400.png)
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