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ohaa [14]
2 years ago
7

What is the sum of a and b?

Mathematics
1 answer:
Juliette [100K]2 years ago
7 0

Answer:

a=13, b=7

Step-by-step explanation:

You can use the exponent rule

3x^{a-5}y^{9-b}=3x^{8}y^{2}

so x^{a-5}=x^{8} so

a-5=8

a=13

y^{9-b} =y^{2} so

9-b=2

b=7

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