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Answer to (8n2-2n3) +( 6n3-8n2)

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Michael M. | Ph.D. Chemist with Experience Tutoring Math, Physics, & ChemistryPh.D. Chemist with Experience Tutoring M...
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First, the parentheses aren’t really doing anything as it is all addition and subtraction, so:

( a - b ) + ( c - d ) = a - b + c - d

or

( 8n2 - 2n3 ) + ( 6n3 - 8n2 ) = 8n2 - 2n3 + 6n3 - 8n2

Now separate the n2 terms from the n3 terms:

8n2 - 2n3 + 6n3 - 8n2 = 8n2 - 8n2 + 6n3 - 2n3

I think you should be able to get it from here, but let me know if you need further assistance.