x -75%x =1\(\frac{3}{4}\)
25% x =\(\frac{7}{4}\)
\(\frac{1}{4}\)x = \(\frac{7}{4}\)
x= \(\frac{7}{4}\): \(\frac{1}{4}\)
x=7
=> x - 75%x = \(\frac{7}{4}\)
=> x - \(\frac{3}{4}\)x = \(\frac{7}{4}\)
=> x ( 1 - \(\frac{3}{4}\)) = \(\frac{7}{4}\)
=> x . \(\frac{1}{4}\)= \(\frac{7}{4}\)
=> x = \(\frac{7}{4}\): \(\frac{1}{4}\)
=> x = \(\frac{7.4}{4}\)
=> x = 7
Vậy x = 7