Mathematics
NULL
Medium
Question
Solve for x: 6x − 27 + 3x = 4 + 9 − x
A
4
✓ Official correct answer
B
5
C
6
D
-4
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
4
No member explanations yet for this option.
B
5
No member explanations yet for this option.
C
6
No member explanations yet for this option.
D
-4
No member explanations yet for this option.
Explanation
9x − 27 = 13 − x ⇒ 10x = 40 ⇒ x = 4.