Bài 1:
Các phân số tối giản là -1/4; 9/16
Bài 1:
a: -5/10=-1/2
18/-33=-6/11
19/57=1/3
-36/-12=3
22/55=2/5
-63/81=-7/9
20/-140=-1/7
-25/-75=1/3
b: \(\dfrac{3\cdot5}{8\cdot24}=\dfrac{15}{192}=\dfrac{5}{64}\)
\(\dfrac{2\cdot14}{7\cdot8}=\dfrac{28}{56}=\dfrac{1}{2}\)
\(\dfrac{3\cdot7\cdot11}{22\cdot11}=\dfrac{21}{22}\)
\(\dfrac{8\cdot5-8\cdot2}{16}=\dfrac{8\cdot3}{16}=\dfrac{3}{2}\)
\(\dfrac{11\cdot4-11}{2-13}=\dfrac{11\cdot3}{-11}=-3\)
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