Question

Các bn giúp mk bài này na !

1/2 + x + 3/2 . ( x+1 ) = 1/3

Các bn giúp mk nhanh na , mk phải nộp bài gấp !

Answer 1

\(\dfrac{1}{2}+x+\dfrac{3}{2}.\left(x+1\right)=\dfrac{1}{3}\)

\(\dfrac{1}{2}+x+\dfrac{3}{2}.x+\dfrac{3}{2}=\dfrac{1}{3}\)

\(\left(x+\dfrac{3}{2}.x\right)+\left(\dfrac{1}{2}+\dfrac{3}{2}\right)=\dfrac{1}{3}\)

\(\dfrac{5}{2}.x+2=\dfrac{1}{3}\)

\(\dfrac{5}{2}.x=\dfrac{1}{3}-2\)

\(\dfrac{5}{2}.x=\dfrac{-5}{3}\)

\(x=\dfrac{-5}{3}:\dfrac{5}{2}\)

\(x=\dfrac{-2}{3}\)