Let missing place be y
- Solution has no solution means both sides are equal
[tex]-2(2x-y)+1=17-4x[/tex]
[tex]\\ \sf\longmapsto -4x+2y+1=17-4x[/tex]
[tex]\\ \sf\longmapsto 17-4x=2y+1-4x[/tex]
On comparing
[tex]\\ \sf\longmapsto 2y+1=17[/tex]
[tex]\\ \sf\longmapsto 2y=17-1[/tex]
[tex]\\ \sf\longmapsto 2y=16[/tex]
[tex]\\ \sf\longmapsto y=\dfrac{16}{2}[/tex]
[tex]\\ \sf\longmapsto y=8[/tex]
