\(\dfrac{1}{4}x=-\dfrac{1}{2}-\dfrac{3}{4}\\ \dfrac{1}{4}x=\dfrac{-1.2-3}{4}\\ \dfrac{1}{4}x=-\dfrac{5}{4}\\ x=\left(-\dfrac{5}{4}\right):\dfrac{1}{4}\\ x=-5\\ b,\dfrac{1}{4}x=-\dfrac{5}{6}-\dfrac{3}{4}\\ \dfrac{1}{4}x=\dfrac{-5.4-3.6}{24}\\ \dfrac{1}{4}x=-\dfrac{19}{12}\\ x=\left(-\dfrac{19}{12}\right):\dfrac{1}{4}\\ x=-\dfrac{19}{3}\)
`3/4 +1/4x = -1/2`
`=> 1/4x = -1/2 -3/4 = -2/4 -3/4`
`1/4x = -5/4`
`=> x = -5/4 : 1/4 =-5/4 * 4`
`x = -5`
Vậy `x=-5`
`3/4 +1/4x = -5/6`
`=> 1/4x= -5/6 - 3/4 = -10/12 - 9/12`
`1/4x= -19/12`
`=> x = -19/12 : 1/4 = -19/12 xx4`
`x= -76/12 =-19/3`
Vậy `x=-19/3`