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08-11-2017
Mathematics

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Combining like terms

simplify the expression
11r - 12r

Respuesta :

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08-11-2017

Answer:
–r

Explanation:
11r - 12r
These terms can be combined like regular numbers since they have the same term, so simply subtract 12 from 11:
11 - 12 = -1
-1r is the answer, but this can also be written as –r

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