Toán ( 1/2 -1/3-1/6)× (1/2+2/3+3/4+…. 2017/2018)+3/4: x = 9/10 17/07/2021 By Aubrey ( 1/2 -1/3-1/6)× (1/2+2/3+3/4+…. 2017/2018)+3/4: x = 9/10
Xin lỗi bạn vì mình gửi bài muộn ,mình đag pk trả lời câu khác `( 1/2 -1/3-1/6). (1/2+2/3+3/4+…. 2017/2018)+3/4: x = 9/10``(3/6-2/6-1/6).(1/2+2/3+3/4+…. 2017/2018)+3/4:x=9/10``([3-2-1]/6)(1/2+2/3+3/4+…. 2017/2018)+3/4:x=9/10``0.(1/2+2/3+3/4+…. 2017/2018)+3/4:x=9/10``0+3/4:x=9/10``3/4:x+9/10``x=3/4:9/10``x=3/4. 10/9``x=5/6`Vậy `x=5/6` $#Rabifoot$ Trả lời
`(1/2 – 1/3 – 1/6) xx (1/2 + 2/3 + 3/4 + … + 2017/2018) + 3/4 : x = 9/10` Ta có: `1/2 – 1/3 – 1/6 = 3/6 – 2/6 – 1/6 = 0/6 = 0` `=> 0 xx (1/2 + 2/3 + … + 2017/2018) + 3/4 : x = 9/10` `=> 0 + 3/4 : x = 9/10` `=> 3/4 : x = 9/10` `=> x = 3/4 : 9/10` `=> x = 5/6` `Vậy x = 5/6` Trả lời