Toán (1 phần 3 – 1 phần 2 ) : 2017 phần 2018 + (4 phần 5 + 1 phần 3 ) : 2017 phần 2018 29/07/2021 By Caroline (1 phần 3 – 1 phần 2 ) : 2017 phần 2018 + (4 phần 5 + 1 phần 3 ) : 2017 phần 2018
`text{Đáp án:}` `=29261/30255` `text{Giải thích các bước giải:}` `(1/3-1/2):2017/2018+(4/5+1/3):2017/2018``=(1/3-1/2).2018/2017+(4/5+1/3).2018/2017``=2018/2017.{[1/3-1/2]+[4/5+1/3]}``=2018/2017.{1/3-1/2+4/5+1/3}``=2018/2017.{(1/3+1/3)-(1/2-4/5)}``=2018/2017.{2/3-(5/10-8/10)}``=2018/2017.{2/3-(-3/10)}``=2018/2017.{2/3+3/10}``=2018/2017.{20/30+9/30}``=2018/2017. 29/30``=58522/60510` `=29261/30255` Trả lời
(1/3 – 1/2 ) : 2017/2018 + ( 4/5 + 1/3 ) : 2017/2018 = 1/3 -1/2 : 2017/2018 + 4/5 + 1/3 : 2017/2018 = (1/3 – 1/3 ) : ( 4/5 +1/2 ) : 2017/2018 = 0 : 13/10 : 2017/2018 = 0 Trả lời
`text{Đáp án:}`
`=29261/30255`
`text{Giải thích các bước giải:}`
`(1/3-1/2):2017/2018+(4/5+1/3):2017/2018`
`=(1/3-1/2).2018/2017+(4/5+1/3).2018/2017`
`=2018/2017.{[1/3-1/2]+[4/5+1/3]}`
`=2018/2017.{1/3-1/2+4/5+1/3}`
`=2018/2017.{(1/3+1/3)-(1/2-4/5)}`
`=2018/2017.{2/3-(5/10-8/10)}`
`=2018/2017.{2/3-(-3/10)}`
`=2018/2017.{2/3+3/10}`
`=2018/2017.{20/30+9/30}`
`=2018/2017. 29/30`
`=58522/60510`
`=29261/30255`
(1/3 – 1/2 ) : 2017/2018 + ( 4/5 + 1/3 ) : 2017/2018
= 1/3 -1/2 : 2017/2018 + 4/5 + 1/3 : 2017/2018
= (1/3 – 1/3 ) : ( 4/5 +1/2 ) : 2017/2018
= 0 : 13/10 : 2017/2018
= 0