SOLUTION: Hello. Can you help me to find the missing value in this equation: 2x+9=6x+? (x=-3/2)

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Question 954233: Hello. Can you help me to find the missing value in this equation:
2x+9=6x+? (x=-3/2)

Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
2x+9=6x+? (x=-3/2)
2(-3/2) +9 = 6(-3/2) + ?
-3 +9 = -9 +?
? = 6 +9 = 15
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check the answer
2(-3/2) +9 = 6(-3/2) + 15
-3 +9 = -9 +15
6 = 6
answer checks