Question

which of the following is a solution to the equation 16= 4x - 4 ?
A.-5
B. -4
C. 5
D. 16

Answer 1

16=4x-4

To solve for x, you have to get the variable alone on one side. First, add 4 to both sides of the equation.

20=4x

Finally, divide each side by 4

5=x
x=5 (C)

To check your answer, substitute 5 as x into the equation.

16=4x-4
16=4(5)-4
16=20-4
16=16

x=5

The correct answer is C.

Hope this helped! :)

Answer 2

16 = 4x - 4

1. Add '4' to both sides

$16 + 4 = 4x - 4 + 4$

$20 = 4x$

2. Divide '4' to both sides

$\frac{20}{4} = \frac{4x}{4}$

$5 = x$

The answer is C.