\(\frac{3}{5}+\frac{7}{20}=\frac{19}{20}\)
\(\frac{2}{3}-\frac{3}{8}=\frac{7}{24}\)
\(345x207=71415\)
\(21105:67=315\)
học vui~!~!
Nhớ k và kb !
3/5+7/20=19/20
2/3-3/8=7/24
345x207=71451
21105:67=315
3/5+7/20=19/20
2/3-3/8=7/24
345*207=71415
21105:67=315
bn phai tinh day du thi minh moi cho !!!!!!!!!!!!!!!
3 / 5 + 7 / 20 = 19 / 20
2/3 - 3/8 = 7 / 24
345 * 207 = 71415
21 105 : 67 = 315
\(\frac{3}{5}\)+ \(\frac{7}{20}\)= \(\frac{12}{20}\)+\(\frac{7}{20}\)= \(\frac{12+7}{20}\)=\(\frac{19}{20}\)
\(\frac{2}{3}\)- \(\frac{3}{8}\)= \(\frac{16}{24}\)- \(\frac{9}{24}\)=\(\frac{16-9}{24}\)=\(\frac{7}{24}\)
345 x 207 = 71415
21 105 : 67 = 315
CHÚC BẠN HỌC GIỎI
3/5+7/20=12/20+7/20=12+7/20=19/20
2/3-3/8=16/24-9/24=16-9/24=7/24
345x207=71415
21 105:67=315
3/5+7/20=19/20
2/3-3/8=7/24
345.207=714115 minh hong hieu dau nay nen cho no la dau nhan day
21105:67=315
21/ 20 8/24 méo hiểu viết câu gi lun