Question

tính nhanh 9 x [151515/171717+131313/181818]

Answer 1

9 x [151515/171717+131313/181818]

= 9 x [15/17+13/18]

= 9 x 491/306

= 491/34

k mk nha

Answer 2

491/34

Answer 3

9 x ( 151515/171717 + 131313/181818 )

= 9 x ( 15/17 + 13/18 )

= 9 x 491/306

= 491/34

Answer 4

9 x ( 151515/171717 + 131313/181818)

= 9 x (15 / 17 + 13/18 ) | Rút gọn |

=  9 x 491 / 306

=   491 /  34

Answer 5

9 x [\(\frac{151515}{171717}+\frac{131313}{181818}\) ]

= 9 x [\(\frac{15}{17}+\frac{13}{18}\) ]

= 9 x \(\frac{491}{306}\)

= \(\frac{491}{34}\)

Answer 6

\(9\times\left(\frac{151515}{171717}+\frac{131313}{181818}\right)\)

\(=9\times\left(\frac{15\times10101}{17\times10101}+\frac{13\times10101}{18\times10101}\right)\)

\(=9\times\left(\frac{15}{17}+\frac{13}{18}\right)\)

\(=9\times\frac{491}{306}\)

\(=\frac{491}{34}\)

Answer 7

\(9.\left(\frac{151515}{171717}+\frac{131313}{181818}\right)\)

\(=9.\left(\frac{15}{17}+\frac{13}{18}\right)\)

\(=9.\left(\frac{491}{306}\right)\)

\(=\frac{491}{34}\)

~ Hok Tốt~