2(x+1)+1/2(x-1)=7/4x
2x+2+1/2x-1/2=7/4x
3/4х=-3/2
х=-3/2*4/3
х=-2
2X + 2 +0.5X - 0.5 = 7\4X
4*(2.5X +1.5) = 7X
10X - 7X + 6 = 0
3X + 6 = 0
3X = - 6
X = - 2