2 answers:
A = y(9 + 3x) factor y out of 9y+3yx, then devided both sides by (9+3x)
A/(9+3x) = y
Answer:

Step-by-step explanation:
we have

Solve for y
That means -----> isolate the variable y
Step 1
Factor the variable y in the right side

Step 2
Divide by
both sides

Step 3
Simplify

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Answer:
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Step-by-step explanation:
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