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ivolga24 [154]
2 years ago
12

3r − 9 = –6r solve for r

Mathematics
2 answers:
LenaWriter [7]2 years ago
8 0

Answer:

\boxed {r = 1}

Step-by-step explanation:

Solve for the value of r:

3r - 9 = -6r

-Add 6r to 3r:

3r - 9 + 6r = -6r + 6r

9r - 9 = 0

-Add 9 on both sides:

9r - 9 + 9 = 0 + 9

9r = 9

-Divide both sides by 9:

\frac{9r}{9} = \frac{9}{9}

\boxed {r = 1}

So, the value of r is 1.

vladimir2022 [97]2 years ago
5 0

Answer:

3r − 9 = –6r

-9 = -6r-3r         (you change the signs when bringing +3r to the other side)

-9 = -9r

r = -9/-9

r = 1

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Answer:

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Step-by-step explanation:

* Lets change the story problem to equations and solve them to find

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3 years ago
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