Đáp án:
Giải thích các bước giải:
`b) 33,76 + 19,52 + 6,24 = ( 33,76 + 6,24 ) + 19,52 = 40 + 19,52 = 59,52`
`d) ( 2016 × 2017 + 2015 )/( 2017 × 2018 - 2019 )`
`= ( 2016 × 2017 + 2015 )/( 2017 × 2016 + 2017 × 2 - 2019 )`
`= ( 2016 × 2017 + 2015 )/( 2017 × 2016 + 4034 - 2019 )`
`= ( 2016 × 2017 + 2015 )/ ( 2016 × 2017 + 2015 )`
`= 1`