Joe concluded that the expression 3x + 15 + 2x is equivalent to the expression 5(x + 3). Which of these best explains how Joe reached his conclusion?

Answer:
The third one (combining like terms then dividing by five)
Step-by-step explanation:
Answer:
combining like terms and dividing each term by 5
Step-by-step explanation:
3x + 15 + 2x Given
5x +15 Combine Like Terms
5x = 5 x Find the LCM
15 = 5 3 LCM is 5
5(x + 3) Pull the 5 out of both and put the remaining factors in parentheses
hope this helps <3