Question 273276
How do you know when an equation has infinitely many solutions?
How do you know when an equation has no solution?

x = x infinite number of solutions (same number both sides)
x = 5 one solution (or x = to just one number)
3 = 5 this is false, no solution (different number on each side)
x = -x this is also false, no solution (different number on each side)