\(\frac{19,8:0,2\times44,44\times2\times13,2:0,25}{3,3\times88,88:0,5\times6,6:0,125\times5}\)
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{19,8:0,2.44,44.2.13,20:0,25}{3,3.88,88:0,5.6,6:0,125.5}\)
=\(\dfrac{19,8.5.44,44.2.13,20.4}{3,3.88,88.2.6,6.8.5}\)
=\(\dfrac{19,8.44,44.13,2.4}{3,3.88,88.6,6.8}\)(bn cứ bỏ số giông nhau ở tử và mẫu là dc)
=\(\dfrac{3,3.44,44.6,6.2.4}{3,3.44,44.2.6,6.4.2}\)(phân tích các số 19,8; 13,2; 88,88; 8)
=\(\dfrac{6}{2}\)
=\(\dfrac{3}{1}\)
=3
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{5}{1.6}\)+ \(\frac{5}{6.11}\)+ .........+\(\frac{5}{501.506}\)
=\(\frac{1}{1.6}+\frac{1}{6.11}+.....+\frac{1}{501.506}\)
=\(\frac{1}{1}-\frac{1}{6}+\frac{1}{6}-\frac{1}{11}+......+\frac{1}{501}-\frac{1}{506}\)
=\(\frac{1}{1}-\frac{1}{506}\)
= tự tính nha
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{19,8:0,2x44,44x2x13,20:0,25}{3,3x88,88:0,5x6,6:0,125x5}=\frac{19,8x5x44,44x2x13,2x4}{3,3x88,88x2x6,6x4x5}=\)
\(\frac{6,6x3x5x44,44x2x3,3x4x4}{3,3x44,44x2x2x6,6x4x5}=\frac{24}{8}=3\)
\(\frac{19,8:0,2\times44,44\times2\times13,20:0,5}{3,3\times88,88:0,5\times6,6:0,125\times5}=\frac{19,8\times5\times44,44\times2\times13,2\times4}{3,3\times88,88\times2\times6,6\times4\times2\times5}=3\)