SOLUTION: simultaneous equation by elimination 3x+4y=5 (1) 2x-5y=-12

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Question 414597: simultaneous equation by elimination
3x+4y=5 (1)
2x-5y=-12
Found 2 solutions by mananth, ewatrrr:
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
3x+4y=5 .....1
2x-5y=-12.....2
3x+4y=5 .............1
2x-5y=-12.............2

multiply (1)by -2
Multiply (2) by 3
-6x-8y =-10
6x-15y =-36

Add the two equations

-23y=-46

/-23

y=2
Plug value of y in
3x+4y=5
3x+8=5
3x=-3
/3
x=-1

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


Hi

Solving System by elimination

3x+4y=5 

2x-5y=-12

Eliminating y

15x+20y=25        | 1st Equation Multiplied by 5  

 8x-20y=-48       | 2nd Equation Multiplied by 4

  23x = -23

   x = -1  and y = 2     |(5-3x)/4  = 8/4 = 2