Question

Steps for solving 5(2x - 8) = 20 are shown. 5(2x-8)= 20 10x - 40 = 20 10x - 40+ 40 = 20 + 40 10x = 60 10x 60 10 10 x = 6 Original Equation Which of these is not part of the solution process?

Answer 1

Answer:

(d) Using the commutative property

Step-by-step explanation:

Given

The above steps

Required

Which is not part of the process

We have:

$5(2x-8)= 20$

$10x - 40 = 20$

$10x - 40+ 40 = 20 + 40$

$10x = 60$

$\frac{10x}{10} = \frac{60}{10}$

$x = 6$

Comparing the above steps with the given list of options, we can see that the commutative property is not applied at all.

Other properties are:

$5(2x-8)= 20$ ---- Distributive

$10x - 40+ 40 = 20 + 40$ ---- Like terms

$\frac{10x}{10} = \frac{60}{10}$ --- Isolating the variable