\(\frac{3}{5}+\frac{-1}{25}-\frac{7}{20}\)
\(=\frac{3}{5}-\frac{1}{25}-\frac{7}{20}\)
\(=\frac{60}{100}-\frac{4}{100}-\frac{35}{100}\)
\(=\frac{21}{100}\)
\(\frac{3}{5}+\frac{-1}{25}-\frac{7}{20}\)
\(=\frac{60}{100}-\frac{4}{100}-\frac{35}{100}\)
\(=\frac{60-4-35}{100}\)
\(=\frac{21}{100}\)
P/S: hok tốt nhé
3/5 = 60/100
-1/ 25 = -4/100
7/20 = 35/100
60 /100 + -4 / 100 - 35/100 = 60 + ( -4 ) - 35 / 100 = 21/100
Vậy 3/5 + -1/25 - 7/20 = 21/100
\(\frac{3}{5}+\frac{-1}{25}-\frac{7}{20}=\frac{3}{5}-\frac{1}{25}-\frac{7}{20}=\frac{14}{25}-\frac{7}{20}=\frac{21}{100}\)
k mik nha
mc=100
=>ta có :
3/5=60/100
-1/25=-4/100
7/20=35/100
=>60/100+4/100-35/100=29/100
vậy 3/5+-1/25-7/20=29/100
