A) \(\frac{3}{2}\times\frac{4}{5}-x=\frac{2}{3}\)
\(\frac{6}{5}-x=\frac{2}{3}\)
\(x=\frac{6}{5}-\frac{2}{3}\)
\(x=\frac{8}{15}\)
b) \(x\times3\frac{1}{3}=3\frac{1}{3}\div4\frac{1}{4}\)
\(x\times\frac{10}{3}=\frac{10}{3}\div\frac{17}{4}\)
\(x\times\frac{10}{3}=\frac{40}{51}\)
\(x=\frac{40}{51}\div\frac{10}{3}\)
\(x=\frac{4}{17}\)
c) \(x+\frac{1}{2}\times\frac{1}{3}=\frac{3}{4}\)
\(x+\frac{1}{6}=\frac{3}{4}\)
\(x=\frac{3}{4}-\frac{1}{6}\)
\(x=\frac{7}{12}\)
~ HOK TỐT ~
a ) 3/2 x 4/5 - x = 2/3
6/5 - x = 2/3
- x = 2/3 - 6/5
- x = 10/15 - 18/15
- x = -8/15
x = 8/15
b ) x * 31/3 = 31/3 : 41/4
x * 31/3 = 124/123
x = 124/123 : 31/3
x = 4/41
c ) x + 1/2 x 1/3 = 3/4
x + 1/6 = 3/4
x = 3/4 - 1/6
x = 9/12 - 2/12
x = 7/12