SOLUTION: Solve the following System of Linear Equations using the Elimination Method -6x-4y=10 3x+12y=15 Show all your work and answer

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Question 1181752: Solve the following System of Linear Equations using the Elimination Method
-6x-4y=10
3x+12y=15
Show all your work and answer





Found 3 solutions by Solver92311, josgarithmetic, MathTherapy:
Answer by Solver92311(821) About Me  (Show Source):
You can put this solution on YOUR website!


I just answered one just like this for you. Use the same process, but you need to find your own appropriate multiplier.

John

My calculator said it, I believe it, that settles it

From
I > Ø

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
system%28-6x-4y=10%2C3x%2B12y=15%29

Here easiest to multiply both sides of equation 2 by 2.
system%28-6x-4y=10%2C6x%2B24y=30%29
Add these equations.
20y=40
highlight%28y=2%29

Using original system again, multiply both sides of equation 1, by 3.
system%28-18x-12y=30%2C3x%2B12y=15%29
Add these equations.
-15x=45
highlight%28x=-3%29

Not the only way to use Elimination Method for the example.

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!
Solve the following System of Linear Equations using the Elimination Method
-6x-4y=10
3x+12y=15
Show all your work and answer 
- 6x -  4y = 10 ------ eq (i)

  3x + 12y = 15 ------ eq (ii)

Factor out a 2 in eq (i) to get: - 3x - 2y = 5 ----- eq (iii)

ADDING eqs (ii) & (iii) ELIMINATES x. Solve for y to get its value.

Substitute the value of y in any of the 2 equations to get the value of x.

"Show all your work and answer." Are you serious? Whose job do you think that is?

You've been given instructions, now do the REST!!