Question

4/5 - 3/5x =7/5                                              (x -3)(x -1/3)(2x - 3) =0

Answer 1

tìm x nhá

 

Answer 2

giúp với

 

Answer 3

\(\dfrac{4}{5}-\dfrac{3}{5}\cdot x=\dfrac{7}{5}\)

\(\dfrac{3}{5}\cdot x=\dfrac{4}{5}-\dfrac{7}{5}\)

\(\dfrac{3}{5}\cdot x=-\dfrac{3}{5}\)

\(x=-\dfrac{3}{5}\cdot\dfrac{5}{3}\\ x=-1\)

\(\left(x-3\right)\left(x-\dfrac{1}{3}\right)\cdot\left(2x-3\right)=0\\ Th1:x-3=0\\ x=0+3\\ x=3\\ Th2:2x-3=0\\ 2x=3\\ x=\dfrac{3}{2}\)

\(Th3:x-\dfrac{1}{3}=0\)

\(x=\dfrac{1}{3}\)

\(=>x\in\left\{\dfrac{1}{3};\dfrac{3}{2};3\right\}\)