Seudónimo Seudónimo
  • 25-03-2019
  • Mathematics
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Please help me with this ! ! ! ! !

Please help me with this class=

Respuesta :

mathstudent55
mathstudent55 mathstudent55
  • 25-03-2019

Answer:

First choice: m = -4

Step-by-step explanation:

The second equation is already solved for n, so lets's use the substitution method and substitute m - 2 for n in the first equation.

m - 2n = 8

m - 2(m - 2) = 8

m - 2m + 4 = 8

-m + 4 = 8

-m = 4

m = -4

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AL2006
AL2006 AL2006
  • 25-03-2019

The second equation tells you what 'n' is.  It's "m-2" .

So you can simply write "m-2" in place of 'n' in the first equation.

Then the first equation says [ m - 2(m-2) = 8 ], and you should have no trouble solving that.

Answer Link

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