SOLUTION: (Can someone please help?) Solve the following system of equations by the elimination method. 1/3x+1/4y=7 1/3x-3/4y=-9 a)The solution is___?(Type an ordered pair. Use integer

Algebra ->  Graphs -> SOLUTION: (Can someone please help?) Solve the following system of equations by the elimination method. 1/3x+1/4y=7 1/3x-3/4y=-9 a)The solution is___?(Type an ordered pair. Use integer      Log On


   

Question 844335: (Can someone please help?)
Solve the following system of equations by the elimination method.
1/3x+1/4y=7
1/3x-3/4y=-9
a)The solution is___?(Type an ordered pair. Use integers or fractions for any numbers in the expression)
b)Infinitely many solutions
c)No solution
Found 2 solutions by Alan3354, ewatrrr:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
1/3x+1/4y=7
1/3x-3/4y=-9
------------------
Subtract

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

1/3x+1/4y=7

1/3x-3/4y=-9 



-4x -3y= -84   |Multiply 1st by -12 and 2nd by 12 and add to eliminate x

 4x - 9y= -108

   -12y = -192 

      y = 16  and x = 9      %281%2F3%29x+%2B+4+=+7 , +x+=+3%2A%283%29

solution P(9, 16)

CHECKING our answer***

1/3x-3/4y=-9 

 3 - 12 = -9

Wish You the Best in your Studies.