Tìm số \(a;b\) biết \(\dfrac{{24}}{{56}} = \dfrac{a}{7} = \dfrac{{ - 111}}{b}\)
\(a = 3,b = - 259\)
\(a = - 3,b = - 259\)
\(a = 3,b = 259\)
\(a = - 3,b = 259\)
Tìm \(x\) biết \(\dfrac{{2323}}{{3232}} = \dfrac{x}{{32}}.\)
\(101\)
\(32\)
\( - 23\)
\(23\)
Tìm \(x\) biết \(\dfrac{{ - 5}}{{ - 14}} = \dfrac{{20}}{{6 - 5x}}\)
\(x=10\)
\( x=- 10\)
\(x=5\)
\(x=6\)
Tìm số \(x;y\) biết \(\dfrac{{ - 3}}{6} = \dfrac{x}{{ - 2}} = \dfrac{{ - 18}}{y}\)
\(x = -1, y = 36\)
\(x = 1, y = - 36\)
\(x = - 1, y = 9\)
\(x = 1, y = 36\)
Tìm \(x\) biết \(\dfrac{x}{{25}} = \dfrac{{121212}}{{252525}}\)
\( - 12\)
\(12\)
\( - 25\)
\(25\)
Tìm \(x\) biết \(\dfrac{6}{{x - 7}} = \dfrac{3}{7}\)
\( - 7\)
\( - 21\)
\(21\)
\(7\)