tính tổng 27+4500+135+550.2/2+4+6+…+14+16+18 17/10/2021 Bởi Josie tính tổng 27+4500+135+550.2/2+4+6+…+14+16+18
`S=(27+4500+135+550.2)/(2+4+6+…+14+16+18)` `S=(27+4500+135+1100)/((2+18)+(4+16)+…+(8+12)+10)` `S=((27+135)+(4500+1100))/(20+20+…+20+10)` `(`Có `4` số hạng `20)` `S=(162+5600)/(20.4+10)` `S=5762/90` `S=2881/45` Bình luận
$\frac{27 + 4500 + 135 + 550 . 2}{2 + 4 + 6 + …+ 14 + 16 +18}$ = $\frac{27 + 4500 + 135 + 1100}{( 18 + 2 ) . 9 : 2}$ = $\frac{4527 + 135 + 1100}{20 . 9 : 2}$ = $\frac{4662 +1100}{180 : 2}$ = $\frac{5762}{90}$ = $\frac{2881}{45}$ Bình luận
`S=(27+4500+135+550.2)/(2+4+6+…+14+16+18)`
`S=(27+4500+135+1100)/((2+18)+(4+16)+…+(8+12)+10)`
`S=((27+135)+(4500+1100))/(20+20+…+20+10)` `(`Có `4` số hạng `20)`
`S=(162+5600)/(20.4+10)`
`S=5762/90`
`S=2881/45`
$\frac{27 + 4500 + 135 + 550 . 2}{2 + 4 + 6 + …+ 14 + 16 +18}$
= $\frac{27 + 4500 + 135 + 1100}{( 18 + 2 ) . 9 : 2}$
= $\frac{4527 + 135 + 1100}{20 . 9 : 2}$
= $\frac{4662 +1100}{180 : 2}$
= $\frac{5762}{90}$
= $\frac{2881}{45}$