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What is the solution to 2x+12=5x-9

What is the solution to 2x+12=5x-9
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3 votes
What is the solution to 2x+12=5x-9

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User KedarX
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2 Answers

5 votes

2x+12=5x-9\ \ \ \ |combine\ like\ terms\\\\2x-5x=-9-12\ \ \ \ \ |simplify\\\\-3x=-21\ \ \ \ \ |:-3\\\\x=7
answered
User Aaron Fi
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8.4k points
4 votes
so 2x+12=5x-9
you want all of the unknowns on one side and all of the known values on the other or
subtract 2x from both sides
12=3x-9
add 9 to both sides
21=3x
divide both sides by 3
7=x
answered
User Tevin
by
8.0k points
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