Answer:
The answer is
→ No property
Step-by-step explanation:
Given equation: [tex]2x + 9 = 4x + 15[/tex]
What were supposed to do: Which properly justifies step 4.
Solve:
[tex]2x + 9 = 4x + 15[/tex]
Step 1: We must subtract 4x on both sides.
[tex]2x+9-4x=4x+15-4x[/tex]
[tex]= -2x+9=15[/tex]
Step 2: We must subtract 9 on both sides.
[tex]-2x+9-9=15-9[/tex]
[tex]= -2x=6[/tex]
Step 3: We must divide both sides by -2.
[tex]\frac{-2}{2} = \frac{6}{-2}[/tex]
[tex]= x = -3[/tex]
Result:
[tex]x=-3[/tex]
There is no Step 4.
