queen100 queen100
  • 08-11-2017
  • Mathematics
contestada

Combining like terms

simplify the expression
11r - 12r

Respuesta :

tropicaia
tropicaia tropicaia
  • 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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