Question

Which expression makes the equation true for all values of x? 16x-16 =4(?)

Answer 1

1.25

Explanation:

16x - 16 = 4

16x = 4 + 16

16x = 20 (divide both sides by 16 to get x)

16x/16 = 20/16

x = 1.25

Answer 2

In the parenthesis should be (4x - 4)

This is because 4 times that value will give you exactly the same equation on both sides making it true for all values of x.