Question

What is the cofficient of 3b in 21 ab.
If anybody can answer it correctly I will mark the answer as the brainliest answer.
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Answer 1

Answer:

24 AB

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Answer 2

Answer:

7a

Step-by-step explanation:

3b×7a = 21ab

If we look at the question, we can see there are two variables in 21, that is 'a' and 'b', so to find the coefficient of 3b in 21ab just divide the two

→ 21÷3=7

→ $\frac{21ab}{3b} = 7a$

as we know similar things get crossed, so 'b' got crossed in 21ab remaining only 'a' in 21ab, so we took the variable 'a' and placed it with 7