ALGEBRA HELP

When solving the equation, what property was used to go from step 3 to step 4?
Step 1: -(2x+3= x-18
Step 2: -2x-3=x-18
Step 3: -3=3x-18
Step 4: 15=3x

A)APOE
B)SPOE
C)MPOE
D)DPOE

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asked by cv
  1. you added 18 to each side, isn't that the equality property of addition?

  2. thank you

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    posted by cv
  3. B- spoe!!!

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    posted by Elli

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