Respuesta :

Let, the variable = x
The equation which has infinite solution could be anything, with equal sides, 

Example: -  2x + 4 = 2x + 4

Explanation. - It has many solutions, 'cause you can put any value for x, and it would be equal to each other!!

For 1, 2(1)+4 = 2(1)+4
same for 5, 2(5)+4 = 2(5) +4

Hope this helps!