Question 924689: How to solve by elimination: 5x-7y=-28 2x-2y=-12
How to solve by elimination 9x-9y=0 6x-2y=-20
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! 5x-7y=-28
2x-2y=-12
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put the system of linear equations into standard form
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5x-7y=-28
2x-2y=-12
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = -7
y = -1
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by elimination:
(5x-7y=-28)*(2)
(2x-2y=-12)*(-7)
add the resulting equations, eliminating the y term.
solve for x
plug x into either equation and solve for y
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9x-9y=0
6x-2y=-20
---
put the system of linear equations into standard form
---
9x-9y=0
6x-2y=-20
---
copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = -5
y = -5
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by elimination:
(9x-9y=0)*(2)
(6x-2y=-20)*(-9)
add the resulting equations, eliminating the y term.
solve for x
plug x into either equation and solve for y
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