Question

-3(4x+9)=21 what is the value of x by step by step instructions

Answer 1

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$\implies - 3(4x + 9) = 21. \\ \\ \implies - 12x - 27 = 21. \\ \\ \implies - 12x = 48. \\ \\ \implies \: - x = \cancel \frac{48}{12} . \\ \\ \implies \: x = - 4$

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Answer 2

Here is your answer user.