\(\dfrac{3}{5}\) x 0,25\(x\) = - \(\dfrac{1}{2}\)
0,25\(x\) = - \(\dfrac{1}{2}\) : \(\dfrac{3}{5}\)
0,25\(x\) = - \(\dfrac{1}{2}\) x \(\dfrac{5}{3}\)
0,25\(x\) = - \(\dfrac{5}{6}\)
\(x\) = - \(\dfrac{5}{6}\) : 0,25
\(x\) = - \(\dfrac{5}{6}\) x 4
\(x\) = - \(\dfrac{10}{3}\)
Vậy \(x\) = - \(\dfrac{10}{3}\)
2626 : (\(\dfrac{1}{2}\)\(x\) + \(\dfrac{5}{2}\)\(x\)) = 26
\(\dfrac{1}{2}\)\(x\) + \(\dfrac{5}{2}\)\(x\) = 2626 : 26
\(\dfrac{1}{2}\)\(x\) + \(\dfrac{5}{2}\)\(x\) = 101
\(x\) x ( \(\dfrac{1}{2}\) + \(\dfrac{5}{2}\)) = 101
\(x\) x 3 = 101
\(x\) = 101 : 3
\(x\) = \(\dfrac{101}{3}\)
Vậy \(x\) = \(\dfrac{101}{3}\)
(5\(x\) + 11) - (3\(x\) - 1) = 4 - \(x\)
5\(x\) + 11 - 3\(x\) + 1 = 4 - \(x\)
(5\(x\) - 3\(x\)) + (11 + 1) = 4 - \(x\)
(5 - 3)\(x\) + 12 = 4 - \(x\)
2\(x\) + 12 = 4 - \(x\)
2\(x\) + \(x\) = 4 - 12
3\(x\) = - 8
\(x\) = - 8 : 3
\(x\) = - \(\dfrac{8}{3}\)
Vậy \(x\) = - \(\dfrac{8}{3}\)