Question

3. Which of the following is a solution to the equation 16= 4x-4?

a.-5
b.-4
c.5
d.16

please help. I'll give a medal + fan I wanna know how

Answer 1

we can write the equation in this way also:
4x-4=16

taking (-4) to opposite side,
since it has (-) sign , it becomes (+) when we take it to the opposite side
now the equation becomes
4x=16+4
i.e.
4x=20
now, we take 4 to the opposite side
the equation becomes
x=20/4
i.e. x=5
so the answer is
c.5