Question

How many solutions does the equation have?

Answer 1

This equation has no solutions

Answer 2

In order to find out if the following equation has solutions or not, we have to solve it:

y+7=y-3    

y-y=-3-7

0=-10  This has no logic, because 0 is not equivalent to -10

In fact:

$0\neq-10$

Then, this equation does not have a logic solution