Bài 1: (2,0 điểm ) Thực hiện phép tính: a) (-$\frac{3}{4}$ + $\frac{2}{3}$) : $\frac{5}{11}$ + (-$\frac{1}{4}$ + $\frac{1}{3}$) : $\frac{5}{11}$ b) $\frac{27^{10}.16^{25}}{6^{30}.32^{15}}$ c) |$\frac{3}{5}$ - $\frac{1}{10}$| - $\sqrt{\frac{36}{25}}$ + $(\frac{3}{10})^{5}$ : $(\frac{3}{10})^{4}$ d) $\sqrt{144}$ + $\sqrt{49}$ - 10.$\sqrt{\frac{4}{25}}$

`a)(-3/4+2/3):5/11+(-1/4+1/3):5/11`

`=-1/12. 11/5+1/12. 11/5`

`=(-1/12+1/12). 11/5`

`=0. 11/5`

`=0`

`b)(27^10. 16^25)/(6^30. 32^15)`

`=((3^3)^10. (2^4)^25)/((3.2)^30. (2^5)^15)`

`=(3^30. 2^100)/(3^30. 2^30. 2^75)`

`=(2^100)/(2^105)`

`=1/2^5`

`=1/32`

`c)|3/5-1/10|-\sqrt{36/25}+(3/10)^5:(3/10)^4`

`=|1/2|-6/5+3/10`

`=1/2-6/5+3/10`

`=-2/5`

`d)\sqrt{144}+\sqrt{49}-10\sqrt{4/25}`

`=12+7-10. 2/5`

`=19-4`

`=15`