Question

|x-5/2|+1/6=2/3

mình không hiểu bài này lắm?các bạn giúp mình nha!!!!!!

Answer 1

\(\left|x-\frac{5}{2}\right|+\frac{1}{6}=\frac{2}{3}\)

\(\left|x-\frac{5}{2}\right|=\frac{2}{3}-\frac{1}{6}\)

\(\left|x-\frac{5}{2}\right|=\frac{1}{2}\)

\(\Rightarrow\left[\begin{array}{nghiempt}x-\frac{5}{2}=\frac{1}{2}\\x-\frac{5}{2}=-\frac{1}{2}\end{array}\right.\)

\(\Rightarrow\left[\begin{array}{nghiempt}x=3\\x=2\end{array}\right.\)

Answer 2

<=>|x-5/2|=2/3-1/6=1/2

=> x-5/2 =1/2   hoặc x-5/2=-1/2

* x-5/2=1/2<=>x=1/2+5/2=3

*x-5/2=-1/2<=>x=-1/2+5/2=2

Answer 3

|x-5/2|+1/6=2/3

|x-5/2|       =2/3-1/6

|x-5/2|       =1/2

=> x-5/2=1/2 hoặc x-5/2=-1/2

     x=1/2+5/2         x=-1/2+5/2

     x=3                   x=2

Vậy x=3;x=2