\(\dfrac{157}{8}.\dfrac{4}{61}=\dfrac{157.4}{4.2.61}=\dfrac{157}{2.61}=\dfrac{157}{122}\)
Đáp án:
Giải thích các bước giải:
Tham Khảo !
`157/ 8 × 4/61`
`= (157 × 4)/ (8 × 61)`
`text(- Ta rút gọn 8 với 4 thành:)`
`= 157/2 × 1/61`
`= (157 × 1)/ (2 × 61)`
`= 157/122`
đặt tính rồi tính:4321-1234,8973+1223
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