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How do you solve for x in 3x-12=9

How do you solve for x in 3x-12=9
asked 58.8k views
2 votes
How do you solve for x in 3x-12=9

asked
User Graham Hannington
by
7.8k points

2 Answers

5 votes

3x - 12=9

3x=9 + 12

3x=21

x=7

answered
User Sam Chen
by
7.2k points
7 votes
add 12 to both sides. leaving you with
3x=21
then divide 3 on both sides. leaving you with
x=7

hopefully that’s right!!!
answered
User Tibs
by
8.3k points
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