Toán tính nhanh 3 phút $\frac{243 x 123 + 124}{243 x 124 -119}$ 04/08/2021 By Madeline tính nhanh 3 phút $\frac{243 x 123 + 124}{243 x 124 -119}$
`frac\{243xx123+124}{243xx124-119}` `=frac{243xx123+124}{243xx123+1xx243-119}` `=frac{243xx123+124}{243xx123+124}` `=1` Trả lời
`(242 xx 123 + 124)/(243 xx 124 – 119)` `= (243 xx 123 + 124)/ (243 (123+1)-119)` `= (243 xx 123 + 124)/( 243 xx 123 + 1 xx 243 – 119)` `= (243 xx 123 + 124)/(243 xx 123 + 124)` `= 1` Trả lời
`frac\{243xx123+124}{243xx124-119}`
`=frac{243xx123+124}{243xx123+1xx243-119}`
`=frac{243xx123+124}{243xx123+124}`
`=1`
`(242 xx 123 + 124)/(243 xx 124 – 119)`
`= (243 xx 123 + 124)/ (243 (123+1)-119)`
`= (243 xx 123 + 124)/( 243 xx 123 + 1 xx 243 – 119)`
`= (243 xx 123 + 124)/(243 xx 123 + 124)`
`= 1`