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
1
X=-
6
W
O the subtraction property of equality
O the multiplication property of equality
O combining like terms on one side of the equation
O the distributive property

Combining of like terms on one side of the equation

Step-by-step explanation:

As you can see, when transitioning from line 2 to line 3, the "2x" term is subtracted from both sides, moving it to the left and combining it with the "-4x".

c

step-by-step explanation:

i think because what else can be a sample of every member