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4 votes
1. 3x + 9 = 12x + 36
x=

User Serenity
by
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1 Answer

4 votes

Answer:

x = -3

Explanation:

3x + 9 = 12x + 36 (rewrite)

3x - 12x + 9 = 36 ------> 3x - 12x = 36 - 9

3x - 12x = 36 - 9 (collect like terms)

-9x = 36 - 9 ( substract)

-9x = 27 (divide both sides for the answer)

-9 -9

x = -3

User Bgporter
by
8.7k points

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