5.|x-$\frac{3}{4}$| - |2x+1$\frac{2}{3}$| = 0
=> |x-$\frac{3}{4}$| - |2x+1$\frac{2}{3}$| = 0
=> |x-$\frac{3}{4}$| = |2x+1$\frac{2}{3}$|
=> x-$\frac{3}{4}$ = 2x+1$\frac{2}{3}$
=> x-2x = 1$\frac{2}{3}$+$\frac{3}{4}$
=> -x = $\frac{29}{12}$
=> x = $\frac{-29}{12}$
Chúc bạn học tốt ^^