superant08 superant08
  • 09-10-2020
  • Mathematics
contestada

Find the sum.
(n+8)+(n−12)
=

Respuesta :

dungeonmaster1929
dungeonmaster1929 dungeonmaster1929
  • 09-10-2020

n=2

Reorder terms:

(8+n)+(n-12)=0

Remover first parentheses :

8+n+(n-12)=0

Reorder (again):

8-12+n+n=0

Simplify:

-4+2n=0

Add 4 to both sides:

2n=4

Divide and you’re done!

n=2

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