Question

RÚT  GỌN  PHÂN  SAU

a)\(\frac{199....9}{99....95}\)

(10 CHỮ SỐ 9 Ở TỬ , 10 CHỮ SỐ CHÍN Ở MẪU )

b) \(\frac{121212}{424242}\)

c) \(\frac{187187187}{221221221}\)

Answer 1

Mẹo lớp 4 cô có dạy but quên

Answer 2

\(a)\frac{199...9}{99...95}=\frac{1}{5}\)

\(b)\frac{121212}{424242}=\frac{2}{7}\)

\(c)\frac{187187187}{221221221}=\frac{11}{13}\)

~Học tốt~

Answer 3

\(a,\frac{199..9}{99..95}=\frac{1}{5}\)(Trượt tiêu)

\(b,\frac{121212}{424242}=\frac{2}{7}\)

\(c,\frac{187187187}{221221221}=\frac{11}{13}\)

Answer 4

a,121212/424242=121212:10101/424242:10101=12/42=2/7

b,187187187/221221221=187187187:1001001/221221221:1001001=187/221=11/13

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