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I am in a timed test please help! 3x + 12 = 21
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22 votes
I am in a timed test please help!

3x + 12 = 21

User SergiiKozlov
by
3.5k points

2 Answers

9 votes

Answer:

x = 3

Explanation:

3x + 12 = 21

- 12 -12

---------------------

3x = 9

divide by 3 on both sides to isolate

x = 3

User Lacop
by
4.0k points
6 votes

Answer:

x=3.

Explanation:

3x+12=21.

3x=21-12.

3x=9.

x=3.

User Stephenie
by
4.1k points
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