anonymous
  • anonymous
A system of equations is shown below: n = 3m + 5 n − 2m = 3 What is the solution, in the form (m, n), to the system of equations? (2, 11) (1, 8) (−2, −1) (−3, −4)
Mathematics
schrodinger
  • schrodinger
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Godlovesme
  • Godlovesme
n = 3m+5 so plug '3m+5' for n in the second formula like (3m-5) -2m = 3
anonymous
  • anonymous
so would it be c? :E
Godlovesme
  • Godlovesme
one sec

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anonymous
  • anonymous
ok
Godlovesme
  • Godlovesme
how did u get C? i got different answer O-o
anonymous
  • anonymous
well i did it wrong, i think i used elimination (i suck at math) but what did you get, could you explain it?(:
Godlovesme
  • Godlovesme
yes i will :D (3m-5)-2m = 3 did u understand what i did ^^ ?
anonymous
  • anonymous
yes
Godlovesme
  • Godlovesme
so (3m-5)-2m= 3 3m-2m -5 = 3 1m -5 + 5 = 3+5 m= 8
anonymous
  • anonymous
wait, so it would be B (1,8)
Godlovesme
  • Godlovesme
hold on i think i did something wrong o-o
anonymous
  • anonymous
ok hahah
Godlovesme
  • Godlovesme
wait it was +5 NOT -5 my bad :/
anonymous
  • anonymous
oh its okay
Godlovesme
  • Godlovesme
ok here (3m + 5) -2m = 3 3m -2m +5 = 3 1m +5-5= 2-5 m= -2
anonymous
  • anonymous
okay so the answer is c?
Godlovesme
  • Godlovesme
yes no need to solve for n ;) :P
anonymous
  • anonymous
thanks! C it is!
Godlovesme
  • Godlovesme
you're welcome :)

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