If an equation is an identity, then how many solutions does it have?

Anew fountain in the shape of a hexagon will have 6 sides of equal length. on a scale drawing, the coordinates of the vertices of the fountain are: (7.5,5), (11.5,2), (7.5,−1), (2.5,−1), (−1.5,2), and (2.5,5). how long is each side of the fountain?

Solve |2x - 5| = 4 if anyone could , that would be great

Determine the solution for mc001-1.jpeg