Toán Rút gọn a)-131313/373737 b)-1717/2121 c)121212/212121 23/11/2021 By Isabelle Rút gọn a)-131313/373737 b)-1717/2121 c)121212/212121
a) $\dfrac{-131313}{373737}$ $ = \dfrac{-13}{37}$ bb) $\dfrac{-1717}{2121}$ $ = \dfrac{-17}{21}$ c) $\dfrac{121212}{212121}$ $= \dfrac{12}{21} = \dfrac{4}{7}$ Trả lời
a) $\dfrac{-131313}{373737}$
$ = \dfrac{-13}{37}$
bb) $\dfrac{-1717}{2121}$
$ = \dfrac{-17}{21}$
c) $\dfrac{121212}{212121}$
$= \dfrac{12}{21} = \dfrac{4}{7}$
Đáp án:
a, -13/37
b, -17/21
c,4/7
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