Respuesta :

1) 5x -2x + 7 - x = 2x + 7

So, Equation with no solution could be:

2x + 7 = 2x + 9

2) One solution could be:

2x + 7 = 10x + 2

3) With many solution would be:

2x + 7 = 2x + 7

Hope this helps!