algerbra help

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6x ^2 y^3+9x^2 y^3
3x^2 y^2
how do I start to solve this

you need to distrubet

how do I do that is this right
6x^2 9x^2+y^3xy^3 ?

The terms on top are "like" terms so you can add them
then simplify
Can you see how the answer would be 5y ?

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