\(\dfrac{2}{3}+\dfrac{5}{2}-\dfrac{3}{4}\)
\(=\dfrac{8}{12}+\dfrac{30}{12}-\dfrac{9}{12}\)
\(=\dfrac{8+30-9}{12}\)
\(=\dfrac{29}{12}\)
\(\dfrac{2}{3}\) + \(\dfrac{5}{2}\) - \(\dfrac{3}{4}\) = \(\dfrac{19}{6}\) - \(\dfrac{3}{4}\) = \(\dfrac{29}{12}\)
\(\dfrac{2}{3}+\dfrac{5}{2}-\dfrac{3}{4}\)
\(=\dfrac{8}{12}+\dfrac{30}{12}-\dfrac{9}{12}\)
\(=\dfrac{8+30-9}{12}\)
\(=\dfrac{29}{12}\)
\(\dfrac{2}{3}\) + \(\dfrac{5}{2}\) - \(\dfrac{3}{4}\) = \(\dfrac{19}{6}\) - \(\dfrac{3}{4}\) = \(\dfrac{29}{12}\)
\(\dfrac{2}{5}\) x \(\dfrac{3}{4}-\dfrac{1}{8}\) \(= \)
\(\dfrac{4}{3}+\dfrac{1}{3}-\dfrac{1}{5}=\)
\(\dfrac{9}{20}-\dfrac{3}{5}\) x \(\dfrac{1}{4}\)\(= \)
\(\dfrac{2}{8}+\dfrac{2}{3}:\dfrac{4}{5}\)\(=\)
\(\dfrac{3}{7}\) + 4 = ?
\(\dfrac{5}{9}\) x 3 = ?
\(\dfrac{7}{8}\) - \(\dfrac{2}{9}\)= ?
5 - \(\dfrac{3}{4}\)= ?
\(\dfrac{5}{7}\) : 6 = ?
\(\dfrac{5}{6}\) x \(\dfrac{2}{7}\)= ?
3 + \(\dfrac{3}{4}\)= ?
\(\dfrac{3}{5}x\dfrac{4}{8}\) = ?
5 : \(\dfrac{3}{8}\)= ?
Mong mn trả lời
a) \(\dfrac{5}{2}\) \(+\dfrac{2}{3}-\dfrac{3}{4}\)
b)\(\dfrac{4}{5}-\dfrac{1}{2}+\dfrac{1}{3}\)
c)\(\dfrac{2}{5}\times\dfrac{1}{2}\div\dfrac{1}{3}\)
a,\(\dfrac{2}{3}\)x\(\dfrac{5}{2}\):\(\dfrac{9}{5}\)
b,\(\dfrac{1}{3}\)x\(\dfrac{1}{4}\)+\(\dfrac{5}{6}\)
c,\(\dfrac{1}{2}\)-\(\dfrac{7}{8}\):\(\dfrac{7}{4}\)
d,\(\dfrac{6}{5}\)-\(\dfrac{4}{5}\)x\(\dfrac{3}{2}\)
a,\(\dfrac{4}{9}\) : \(\dfrac{3}{10}\)
b,\(\dfrac{3}{7}\) x \(\dfrac{5}{7}\)
c,\(\dfrac{4}{9}\) : \(\dfrac{3}{2}\)
D \(\dfrac{3}{9}\) + \(\dfrac{5}{6}\) x \(\dfrac{2}{3}\)
E \(\dfrac{2}{7}\) x \(\dfrac{4}{3}\) + \(\dfrac{2}{6}\)
G \(\dfrac{4}{7}\) : 2 + \(\dfrac{4}{7}\)
\(\dfrac{3}{5}+\dfrac{a}{b}=5\) \(\dfrac{a}{b}-\dfrac{4}{7}=\dfrac{5}{6}\) \(\dfrac{2}{3}\) x \(\dfrac{a}{b}=\dfrac{3}{5}\)
\(\dfrac{a}{b}:\dfrac{2}{7}=3+\dfrac{2}{3}\) \(\dfrac{7}{5}-\dfrac{a}{b}=\dfrac{2}{5}:2\)
\(\dfrac{3}{5}:\dfrac{a}{b}=\dfrac{2}{7}\) ÉT O ÉT
\(\dfrac{3}{4}\) + 3 \(\dfrac{5}{2}\) x 4 2 - \(\dfrac{7}{8}\)\(\) \(\dfrac{9}{4}\) - 2 5 : \(\dfrac{5}{7}\) \(\dfrac{5}{6}\) : \(\dfrac{2}{4}\) giúp mik vớiii
Bài 1 : TÍNH
\(\dfrac{2}{3}+\dfrac{3}{10}\) ; \(\dfrac{2}{3}-\dfrac{5}{8}\) ; \(\dfrac{3}{7}\) x \(\dfrac{4}{9}\) ; \(\dfrac{5}{6}:\dfrac{4}{3}\)
BÀI 2 : TÌM \(x\)
a) \(\dfrac{5}{4}-x\) bằng \(\dfrac{2}{3}\) b) \(x:\dfrac{3}{5}b\text{ằng}4\)
giải giúp mik với. đi mà. làm ơn. GIẢI RÕ RÀNG VÀ Đ CHO MIK VỚI NHA. CẢM ƠN AH
Tính:
a) \(\dfrac{11}{10}+\dfrac{3}{5}:\dfrac{2}{3}\)
b) \(\dfrac{4}{3}\) + 5 x \(\dfrac{5}{8}\)
c) \(\left(\dfrac{2}{5}+\dfrac{3}{7}\right)x\dfrac{25}{29}\)
d) \(\dfrac{1}{4}x\dfrac{5}{12}+\dfrac{5}{12}x\dfrac{4}{5}\)
| \(\dfrac{1}{3}+\dfrac{2}{3}+\dfrac{4}{3}+\dfrac{19}{3}=\) | \(\dfrac{3}{4}+\dfrac{4}{4}+\dfrac{5}{4}+\dfrac{6}{4}+\dfrac{x}{2}+\dfrac{8}{2}+\dfrac{9}{4}\)= |
HELP