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3x-9=12 is the answer 9,7,1, or 63 ?
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3x-9=12 is the answer 9,7,1, or 63 ?

User FDinoff
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2 Answers

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Hey there! Great question=) 3x-9=12 +9=+9 3x=21 x=7 I hope this helps:)
User Ramar
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3x - 9 = 12....add 9 to both sides
3x = 12 + 9
3x = 21
x = 21/3
x = 7
User Twodayslate
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8.5k points
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