Question

Which steps can be done to both sides of the equation to determine the value of x ?

3.2x – 9.6 = 38.4

Answer 1

Answer: add 9.6, then divide by 3.2.

Explanation:

Answer 2

- Add 9.6 to both sides of the equation

- Divide both side by the coefficient of x i.e 3.2

Explanation:

The first step that can be done to both of the equation given is to add 9.6 to both sides of the equation as shown;

3.2x – 9.6 = 38.4

3.2x – 9.6+9.6 = 38.4+9.6

3.2x = 38.4+9.6

3.2x = 48.0

step 2;

Divide both side by the coefficient of x i.e 3.2

3.2x/3.2 = 48.0/3.2

x = 15

Therefore the value of x is 15