Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(\frac{3}{8}+\frac{15}{32}=\frac{12}{32}+\frac{15}{32}=\frac{27}{32}\)
\(\frac{8}{9}-\frac{5}{36}=\frac{32}{36}-\frac{5}{36}=\frac{27}{36}=\frac{3}{4}\)
\(\frac{15}{6}-\frac{7}{4}+2=\frac{30}{12}-\frac{28}{12}+\frac{24}{12}=\frac{26}{12}=\frac{13}{6}\)
\(3-\left(\frac{3}{4}+\frac{5}{12}\right)=3-\left(\frac{9}{12}+\frac{5}{12}\right)=3-\frac{14}{12}=3-\frac{7}{6}=\frac{18}{6}-\frac{7}{6}=\frac{11}{6}\)
`3/7 + 4/5 + 4/7`
`= (3/7 +4/7)+4/5`
`= 7/7 +4/5`
`= 1 + 4/5`
`= 5/5 +4/5`
`=9/5`
`------`
`6/11 + 2/15 + 5/11`
`=(6/11 + 5/11)+2/15`
`= 1 + 2/15`
`= 15/15 +2/15`
`= 17/15`
`-----`
`4/9 + 2/5 + 15/27`
`= (4/9 + 15/27 )+2/5`
`= 1+2/5`
`=5/5 +2/5`
`=7/5`
`-----`
`6/13 + 9/32 + 21/26`
`= (6/13 + 21/26)+9/32`
`= ( 12/26 + 21/26)+9/32`
`= 33/26 +9/32`
`=645/416`
\(\frac{4}{5}+\frac{3}{15}=\frac{4}{5}+\frac{1}{5}=\frac{4+1}{5}=\frac{5}{5}=1\)
\(\frac{2}{3}+\frac{32}{24}=\frac{2}{3}+\frac{4}{3}=\frac{2+4}{3}=\frac{6}{3}=2\)
\(\frac{5}{6}+\frac{15}{18}=\frac{5}{6}+\frac{5}{6}=\frac{5+5}{6}=\frac{10}{6}\)
HT
\(\frac{50}{150}=\frac{1}{3}\)
\(\frac{5}{20}=\frac{1}{4}\)
\(\frac{8}{32}=\frac{1}{4}\)
Sau đó bạn cứ rút gọn thôi,tích cho tớ nha
- \(\frac{1}{3}\)
- \(\frac{1}{4}\)
- \(\frac{1}{4}\)
- \(\frac{2}{3}\)
- \(\frac{2}{3}\)
- \(\frac{3}{2}\)
- \(\frac{3}{5}\)
- \(\frac{1}{2}\)
- \(\frac{18}{5}\)
- \(\frac{1}{4}\)
- \(\frac{1}{25}\)
- \(\frac{1}{8}\)
- \(\frac{1}{2}\)
- \(\frac{3}{7}\)
- \(\frac{2}{3}\)
- \(\frac{1}{3}\)
- k cho mk nha
1, Rút gọn rồi tính
a) \(\frac{4}{5}+\frac{3}{15}\)
= \(\frac{4}{5}+\frac{1}{5}\)
= \(\frac{5}{5}\)
= \(1\)
b) \(\frac{2}{3}+\frac{32}{24}\)
= \(\frac{2}{3}+\frac{4}{3}\)
= \(\frac{6}{3}\)
= \(2\)
c) \(\frac{5}{6}+\frac{15}{18}\)
= \(\frac{5}{6}+\frac{5}{6}\)
= \(\frac{10}{6}\)
= \(\frac{5}{3}\)
2, Tính rồi rút gọn
a) \(\frac{8}{15}+\frac{2}{3}\)
= \(\frac{8}{15}+\frac{10}{15}\)
= \(\frac{18}{15}\)
= \(\frac{6}{5}\)
b) \(\frac{3}{7}+\frac{4}{8}\)
= \(\frac{24}{56}+\frac{28}{56}\)
= \(\frac{52}{56}\)
= \(\frac{13}{14}\)
mn ơi e vít nhầm là tính rồi rút gọn mn sửa lại là rút gọn rùi tính
bn ơi mk vít nhầm là tính rồi rút gọn bn sửa lại là rút gọn rùi tính
\(\dfrac{32}{5}-\dfrac{15}{4}=\dfrac{32\times4}{5\times4}-\dfrac{15\times5}{4\times5}\\ =\dfrac{128}{20}-\dfrac{75}{20}\\ =\dfrac{128-75}{20}=\dfrac{53}{20}\)
\(\dfrac{32}{5}-\dfrac{15}{4}=\dfrac{128}{20}-\dfrac{75}{20}=\dfrac{53}{20}\)