Đáp án: `c) -20` `d) 3` Giải thích các bước giải: `c) 16“2/7:3/5-28“2/7:3/5` `=114/7.(5/3)-198/7.(5/3)` `=5/3(114/7-198/7)` `=5/3.(-12)=-20` `d) (81^11.(3^17))/(27^10.(9^15))` `=((3^4)^11.(3^17))/((3^3)^10.(3^2)^15)` `=3^61/3^60=3` Reply
`c) 16 2/7:3/5-28 2/7:3/5` `=114/7.(5/3)-198/7.(5/3)` `=5/3(114/7-198/7)` `=5/3.(-12)` `=-20` `d) (81^11.(3^17))/(27^10.(9^15))` `=((3^4)^11.(3^17))/((3^3)^10.(3^2)^15)` `=3^61/3^60` `=3` Reply
Đáp án:
`c) -20`
`d) 3`
Giải thích các bước giải:
`c) 16“2/7:3/5-28“2/7:3/5`
`=114/7.(5/3)-198/7.(5/3)`
`=5/3(114/7-198/7)`
`=5/3.(-12)=-20`
`d) (81^11.(3^17))/(27^10.(9^15))`
`=((3^4)^11.(3^17))/((3^3)^10.(3^2)^15)`
`=3^61/3^60=3`
`c) 16 2/7:3/5-28 2/7:3/5`
`=114/7.(5/3)-198/7.(5/3)`
`=5/3(114/7-198/7)`
`=5/3.(-12)`
`=-20`
`d) (81^11.(3^17))/(27^10.(9^15))`
`=((3^4)^11.(3^17))/((3^3)^10.(3^2)^15)`
`=3^61/3^60`
`=3`