SOLUTION: I am still not getting this can anyone help me with this?
solve by elimination method
-7x+5y=-20
-3x-2y=8
I know that I am to multiply the first equation by 2 and the second
Algebra.Com
Question 459179: I am still not getting this can anyone help me with this?
solve by elimination method
-7x+5y=-20
-3x-2y=8
I know that I am to multiply the first equation by 2 and the second equation by 5 which would give me -14x+10y=-4 and -15x-10y=40. Then I am to add them which would give me -29x=36 but I don't know where to go from there. Can someone help me please, thank you so much
Answer by math-vortex(648) (Show Source): You can put this solution on YOUR website!
I always appreciate when a student tells us what they've tried so far. Good work!
...
I see a small arithmetic error in your first equation. Multiplying the right side by 2 gives (2)(-20)=-40 so your new equation would be -14x+10x=-40.
...
Add the two equations,
to give,
Divide both sides by -29.
Now, substitute 0 for x into one of the original equations to find the y-value. It doesn't matter which one.
...
So, the solution to your system of equations is the order pair (0,-4). It's always a good idea to check your work for possible errors.
...
CHECK:
Good. Now check the other equation.
Winner, winner, chicken dinner! (o:
RELATED QUESTIONS
I need help again to solve by elimination method. can someone help me please.
3x+6y=39
(answered by simranb)
21. 3X-2Y+-13
9X+5Y=16
I tried to solve this equation using the the process of... (answered by stanbon)
I am needing to solve this equation by the addition (elimination method)
2x+4y=8... (answered by jim_thompson5910)
How to solve linear equations using any method.
FOr this one I tried using the... (answered by macston)
Can anyone help me with this?
Solve by elimination
5x+5y=-7
7x-3y=19
I do not... (answered by richwmiller)
I am nowhere close to getting the answer can you please help me with this problem?
I... (answered by Alan3354)
Hello, I am trying to get this algebra down, and right now it is still not clicking. I am (answered by stanbon)
Solve by substitution or elimination method:
4x – 5y = 14... (answered by solver91311)
Solve the system by the elimination method
5x+5y=-7
7x-2y=13
Can someone please help... (answered by checkley77)