Which of the following gives the simplified form of the expression 3(7x + 9)?

22x + 27

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21x + 27

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21x + 9

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21x + 7x

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Solution

The correct option is B 21x + 27
Given expression is 3(7x + 9).

Multiplying by 3 with each term in the bracket, we get,

3(7x + 9) = 3(7x) + 3(9)

= 21x + 27

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