`2(x+1)-2=4x-5`
`2x+2-2=4x-5`
`2x=4x-5`
`2x-4x=-5`
`-2x=-5`
`x=5/2`
\(2(x+1)-2=4x-5\)
\(\Leftrightarrow 2x+2-2=4x-5\)
\(\Leftrightarrow 2x-4x=-5\)
\(\Leftrightarrow -2x=-5\)
\(\Leftrightarrow x=\dfrac52\)
Vậy \(S=\left\{\dfrac52\right\}\)
Tham khảo nhé bạn
2(x+1)−2=4x−52(x+1)-2=4x-5
2x+2−2=4x−52x+2-2=4x-5
2x=4x−52x=4x-5
2x−4x=−52x-4x=-5
−2x=−5-2x=-5
x=52
Ta có: \(2\left(x+1\right)-2=4x-5\)
\(\Leftrightarrow2x+2-2-4x+5=0\)
\(\Leftrightarrow-2x=-5\)
hay \(x=\dfrac{5}{2}\)
