7/4-Xx5/6=1/2+1/3
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7/4 - x . 5/6 = 1/2 + 1/3
7/4 - x . 5/6 = 5/6
7/4 - x = 5/6 : 5/6
7/4 - x = 1
x = 7/4 - 1
x = 3/4
7/4 - x . 5/6 = 1/2 + 1/3
7/4 - x . 5/6 = 5/6
7/4 - x = 5/6 : 5/6
7/4 - x = 1
x = 7/4 - 1
x = 3/4
7-4-Xx5/6 = 5/6
x5/6 = 7/4 - 5/6
x5/6 = 11/12
x = 11/12 : 5/6
x = 11/10
cho mình hỏi có phải là 7/4 - nhân x nhân 5/6 = 1/2 = 1/3
đúng k
\(\frac{1}{3}+x\times\frac{5}{6}-\frac{1}{6}=\frac{2}{3}\)
\(\Rightarrow x\times\frac{5}{6}-\frac{1}{6}=\frac{2}{3}-\frac{1}{3}=\frac{1}{3}\)
\(\Rightarrow x\times\frac{5}{6}=\frac{2}{6}+\frac{1}{6}=\frac{1}{2}\)
\(\Rightarrow x=\frac{1}{2}\times\frac{6}{5}=\frac{3}{5}\)
Lời giải:
a.
$x-\frac{1}{2}=\frac{2}{3}$
$x=\frac{2}{3}+\frac{1}{2}=\frac{7}{6}$
b.
$x\times \frac{5}{6}=\frac{1}{2}$
$x=\frac{1}{2}: \frac{5}{6}=\frac{3}{5}$
c.
$x:\frac{2}{5}=10$
$x=10\times \frac{2}{5}=4$
d.
$\frac{7}{5}-x=\frac{12}{10}$
$x=\frac{7}{5}-\frac{12}{10}=\frac{1}{5}$
\(\dfrac{2}{5}+\dfrac{2}{3}+\dfrac{2}{4}\)
= \(\dfrac{24}{60}\) + \(\dfrac{40}{60}\) + \(\dfrac{30}{60}\)
= \(\dfrac{64}{60}\) + \(\dfrac{30}{60}\)
= \(\dfrac{47}{30}\)
\(\dfrac{2}{6}+\dfrac{3}{12}\)
= \(\dfrac{4}{12}\) + \(\dfrac{3}{12}\)
= \(\dfrac{7}{12}\)
\(\dfrac{5}{6}\) + \(\dfrac{1}{3}\)
= \(\dfrac{5}{6}\) + \(\dfrac{2}{6}\)
= \(\dfrac{7}{6}\)
\(\dfrac{1}{3}\) + \(\dfrac{5}{12}\) + \(\dfrac{5}{6}\)
= \(\dfrac{4}{12}\) + \(\dfrac{5}{12}\) + \(\dfrac{10}{12}\)
= \(\dfrac{9}{12}\) + \(\dfrac{10}{12}\)
= \(\dfrac{19}{12}\)
\(\dfrac{5}{8}\) + \(\dfrac{4}{7}\)
= \(\dfrac{35}{56}\) + \(\dfrac{32}{56}\)
= \(\dfrac{67}{56}\)
\(\dfrac{7}{3}\) + \(\dfrac{8}{7}\)
= \(\dfrac{49}{21}\) + \(\dfrac{24}{21}\)
= \(\dfrac{73}{21}\)
\(\dfrac{1}{5}+\dfrac{5}{35}\)
= \(\dfrac{7}{35}\) + \(\dfrac{5}{35}\)
= \(\dfrac{12}{35}\)
Lời giải chi tiết:
3 + 4 > 6 | 6 + 1 > 6 | 5 + 1 = 6 |
3 + 4 = 7 | 5 + 2 > 6 | 7 – 5 > 3 |
7 – 4 < 4 | 7 – 2 = 5 | 7 – 6 = 1 |
\(\frac{7}{4}-x\times\frac{5}{6}=\frac{1}{2}+\frac{1}{3}\)
\(\frac{7}{4}-x\times\frac{5}{6}=\frac{5}{6}\)
\(x\times\frac{5}{6}=\frac{7}{4}-\frac{5}{6}\)
\(x\times\frac{5}{6}=\frac{11}{12}\)
\(x=\frac{11}{12}\div\frac{5}{6}\)
\(x=\frac{11}{10}\)
k mk nha Vũ Nhật Minh
7/4-Xx5/6=1/2+1/3
=> 7/4-x.5/6=5/6
=> x.5/6=7/4-5/6=11/12
=>x=11/12:5/6=11/10
bấm **** nha