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LizzyGee47
LizzyGee47 LizzyGee47
  • 06-02-2015
  • Mathematics
Answered

5x+3y=39

x+y=3


ELIMINATION METHOD

Verified Answer :

apologiabiology
apologiabiology apologiabiology
  • 06-02-2015

5x+3y=39
x+y=3
we will eliminate the y terms first
multiply bottom equation by -3
-3x-3y=-9
add this to the first equation
5x-3x+3y-3y=39-9
2x+0=30
divide both sdies by 2
x=15

subsitute into second equation
x+y=3
15+y=3
subtract 15 from both sdies
y=-12

x=15
y=-12

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