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

Urhixidur asked Nov 21, 2023

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45 votes

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

Urhixidur asked Nov 21, 2023

2.7k points

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12 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

Jicaar answered Nov 27, 2023

3.1k points

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