Question

HELPPPPP !!!

What is the justification for the step taken from line 2 to line 3?

3x +9-7X=X+10+X

-4x+9 = 2x+10

-6x+9= 10

-6x=1

x = 6 음

(A) the subtraction property of equality

(B) the multiplication property of equality

(C) combining like terms on one side of the equation

(D) the distributive property

Submit

Answer 1

A. the subtraction property of equality

Answer 2

(A) the subtraction property of equality

Explanation:

Given

The steps in the question

Require

Justify step 2 to 3

Write out step 2:

`-4x+9 = 2x+10`

Apply subtraction property by subtracting 2x from both sides

`-4x-2x+9 = 2x-2x+10`

`-6x+9 = 10`

Notice that the above equation is represented in step 3.

Hence, option A answers the question.