Question

Simplify 21x - 3(4x + y)

Answer 1

Answer:

Step-by-step explanation:

$21x-3(4x+y)\\21x-12x-3y\\9x-3y\\3(3x-y)$

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Answer 2

Answer:

9x-3y

Step-by-step explanation:

21x-3(4x+y)

21x-3(4x+y)=21x-12x-3y

21x-3(4x+y)=21x-12x-3y=9x-3y