\(\dfrac{3}{10}+\dfrac{3}{35}=\dfrac{21}{70}+\dfrac{6}{70}=\dfrac{27}{70}\)
3/10+3/35=105/350+30/350 = 135/350= 27/70
`3/10 + 3/35`
`= 135/350`
`= 27/70`.
\(\dfrac{3}{10}+\dfrac{3}{35}=\dfrac{21}{70}+\dfrac{6}{70}=\dfrac{27}{70}\)
3/10+3/35=105/350+30/350 = 135/350= 27/70
`3/10 + 3/35`
`= 135/350`
`= 27/70`.
1.Điền dấu <,>,= hoặc số vào chỗ chấm:
a)\(\dfrac{3}{4}\)...\(\dfrac{12}{16}\) b)\(\dfrac{4}{7}\)...\(\dfrac{20}{35}\) c)\(\dfrac{5}{8}\)=\(\dfrac{...}{40}\) d)\(\dfrac{28}{35}\)=\(\dfrac{4}{...}\)
Ghi mỗi số và dấu thui nha ko cần ghi đầy dủ đâu
rút gon rồi tính \(\dfrac{3}{15}-\dfrac{5}{35}\) \(\dfrac{18}{27}-\dfrac{2}{6}\)
Hãy so sánh các phân số sau bằng phương pháp so sánh phần bù :
a)\(\dfrac{10}{11}và\dfrac{19}{20}\)
b) \(\dfrac{13}{15}và\dfrac{15}{17}\)
c) \(\dfrac{31}{35}và\dfrac{35}{37}\)
\(\dfrac{4}{7}\)+\(\dfrac{3}{35}\)
Rút gọn phân số
\(\dfrac{4}{10}\),\(\dfrac{8}{12}\),\(\dfrac{15}{35}\),\(\dfrac{11}{33}\),\(\dfrac{36}{75}\)
a,\(x\)\(+\)\(\dfrac{4}{5}\)=\(\dfrac{45}{4}\)\(-\)\((\)\(\dfrac{7}{5}\)+\(\dfrac{3}{5}\)\()\)
b,\(\dfrac{5}{7}\)+\(\dfrac{x}{35}\)=\(\dfrac{4}{5}\)
12:05
\(x+\dfrac{3}{7}=\dfrac{35}{50}\)
tìm x a, \(\dfrac{x}{4}\) =\(\dfrac{15}{20}\) b, \(\dfrac{15}{x}\) = \(\dfrac{25}{35}\) c, \(\dfrac{x}{5}\)=\(\dfrac{26}{65}\) d, \(\dfrac{3}{x}\)=\(\dfrac{51}{85}\)
2/ Tìm y:
y + \(\dfrac{1}{3}\) x 4 = 12 \(\dfrac{2}{5}\) + y = \(\dfrac{12}{35}\) x \(\dfrac{14}{9}\)