Respuesta :

Answer:

bottom one

Step-by-step explanation:

9a-b-2a-10b      add like terms

7a-11b

So to answer this and find the simplest form, you will have to combine common terms!

9a-2a=7a
-10b-b=-11b

When you put both answers into an equation you will get: 7a-11b which means your answer is D. Hope this helps!

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