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21x =7? A. x=3 B. None of these C. x=147 D. x=28
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6 votes
21x =7?
A. x=3
B. None of these
C. x=147
D. x=28

User Andy Macleod
by
2.8k points

1 Answer

10 votes

Answer: B

Explanation:

To isolate x, you divide both sides by 21

21x=7


(21x)/(21)=(7)/(21)

x = 7/21

Simplify by dividing both the numerator and denominator by 7

x = 1/3

Since, 1/3 is not an option, B is the correct answer

User Kjk
by
3.5k points
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