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MatthewMorgan182 MatthewMorgan182
  • 11-09-2015
  • Mathematics
Answered

x+y=12

x-y=2


Solve by elimination

Verified Answer :

naǫ
naǫ naǫ
  • 11-09-2015

\(x+y=12 \\ \underline{x-y=2} \\ x+x=12+2 \\ 2x=14 \\ x=\frac{14}{2} \\ x=7 \\ \\ x+y=12 \\ 7+y=12 \\ y=12-7 \\ y=5 \\ \\ \boxed{(x,y)=(7,5)}\)

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