4(x+4) = 4x+16
Apply distributive property:
4(x)+4(4)= 4x+16
4x+16=4x+16
Add and subtract alike terms
4x-4x= 16-16
0=0
Since x can have many values, it has an infinite number of solutions.
we can replace x by 1, by 3, by 2 and the equality will remain.
the equation has an infinite number of solutions.