x= \(\dfrac{3}{4}-\dfrac{1}{2}\)
x = \(\dfrac{3}{4}-\dfrac{2}{4}=\dfrac{1}{4}\)
vậy x = \(\dfrac{1}{4}\)
`x+1/2 =3/4`
`<=> x = 3/4 - 1/2`
`<=> x = 6/8 - 4/8`
`<=> x = 1/4`
Vậy `x = 1/4`
\(x+\dfrac{1}{2}= \dfrac{3}{4}\\<=>x=\dfrac{3}{4}-\dfrac{1}{2}\\<=>x=\dfrac{3}{4}-\dfrac{2}{4}\\<=>x=\dfrac{1}{4}\)