Giải hộ tôi câu 1 vs

`1`

`a)(34 -14.18)- ( 82 * 14 - 99 .34) + (-2)^2 *6`

`=34 - 14 . 18 - 82.14 + 99 . 24 + 4* 6`

`=34 * ( 1+99) - 14 * (18 + 82) + 24`

`=34 *100  -14 *100 + 24`

`=100*(34-14) +24`

`=100*20 +24`

`=2000 +24`

`=2024`

`b) 7/(-9) * 5 /12 - 7/9 : 12/7 + 2 7/9`

`=-7/9 * (5/12 + 7/12 ) + 25/9`

`=-7/9 * 1 + 25/9`

`=2`

`c) (3^20*42)/(9*3^18 + 3^20 *5) +125 *5^2021 - (17+5^2024)`

`=(3^20* 42)/(3^20(1+5))+5^3 * 5^2021 - 17-5^2024`

`=42/6 + 5^2024 - 5^2024 - 17`

`=7-17`

`=-10`

`d)(2010/1+2009/2+2008/3+....+1/2010)/(1/2+1/3+1/4+...+1/2001)`

`=(1+2009/2+1+2008/3+1+...+1/2010+1)/(1/2+1/3+1/4+...+1/2001)`

`=(2011/2011+2011/2+2011/3+...+2011/2010)/(1/2+1/3+1/4+...+1/2001)`

`=(2011(1/2+1/3+1/4+...+1/2001))/(1/2+1/3+1/4+...+1/2001)`

`=2011`