Rút gọn phân số 64/ 4
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\(\dfrac{64}{1000}=\dfrac{64:8}{1000:8}=\dfrac{8}{125}\)
\(\frac{36}{64}=\frac{36:4}{64:4}=\frac{9}{16}\)
\(~~~Hok\)tốt\(~~~\)
\(\dfrac{90}{120}=\dfrac{30.3}{30.4}=\dfrac{3}{4}\)
\(\dfrac{15}{25}=\dfrac{5.3}{5.5}=\dfrac{3}{5}\)
\(\dfrac{18}{45}=\dfrac{9.2}{9.5}=\dfrac{2}{5}\)
\(\dfrac{36}{64}=\dfrac{4.9}{4.16}=\dfrac{9}{16}\)
\(\dfrac{32}{72}=\dfrac{8.4}{8.9}=\dfrac{4}{9}\)
\(\dfrac{84}{49}=\dfrac{7.12}{7.7}=\dfrac{12}{7}\)
\(\dfrac{90}{120}=\dfrac{3}{4};\dfrac{15}{25}=\dfrac{3}{5};\dfrac{18}{45}=\dfrac{2}{5};\dfrac{36}{64}=\dfrac{9}{16};\dfrac{32}{72}=\dfrac{4}{9};\dfrac{84}{49}=\dfrac{12}{7}\)
64/144=4/9
17/85=1/5
80/240=1/3
131313/393939=1/3
152152/172172=38/43
11/33=1/3
72/54=4/3
35/115=7/23
11/121=1/11
250/64=125/32
\(\frac{64}{4}=16\)
64
4 =16