Question

tìm x biết 3/4+1/4(x-2)=1

Answer 1

\(\dfrac{3}{4}+\dfrac{1}{4}\left(x-2\right)=1\)

⇔ \(\dfrac{1}{4}\left(x-2\right)=1-\dfrac{3}{4}=\dfrac{1}{4}\)

⇔ \(x-2=\dfrac{1}{4}:\dfrac{1}{4}=1\)

⇔ \(x=3\)

Answer 2

\(\dfrac{3}{4}+\dfrac{1}{4}\left(x-2\right)=1\)

        \(\dfrac{1}{4}\left(x-2\right)=1-\dfrac{3}{4}=\dfrac{1}{4}\)

           \(\left(x-2\right)=\dfrac{1}{4}\div\dfrac{1}{4}=1\)

            \(x\)         \(=1+2=3\)