2 câu trả lời
Answer`:`
`3/5+1/25-7/20`
`=15/25+1/25-7/20`
`=16/25-7/20`
`=64/100-35/100`
`=29/100`
`#Boy`
Đáp án:
$\dfrac{3}{5}+\dfrac{1}{25}-\dfrac{7}{20}$
$= \dfrac{60}{100}+\dfrac{4}{100}- \dfrac{35}{100}$
$= \dfrac{60+4-35}{100}$
$= \dfrac{29}{100}$