SOLUTION: I hope this is posted in the correct place. I need some help I do not understand how to do this. Thanks for any help you can give.
solve by elimination process and type an ordered
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-> SOLUTION: I hope this is posted in the correct place. I need some help I do not understand how to do this. Thanks for any help you can give.
solve by elimination process and type an ordered
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Question 127163: I hope this is posted in the correct place. I need some help I do not understand how to do this. Thanks for any help you can give.
solve by elimination process and type an ordered pair.
4x - 9y = 14.5
7y - 2x = -8.5 Answer by solver91311(24713) (Show Source):
Start by putting the equations into standard form:
Eq. 1:
Eq. 2:
Let's start by eliminating the y variable. We need a constant to multiply the first equation and another constant to multiply the second equation so that the coefficients on the y variables become additive inverses. 7 * -9 = -63 and 9 * 7 = 63. That should work.
Eq. 3:
Eq. 4:
Now add the x terms together, the y terms together, and the constants together to create another equation that has a zero coefficient on y.
Eq. 5:
Go back to the original set of equations:
Eq. 1:
Eq. 2:
But this time, just multiply equation 2 by 2:
Eq. 6:
Eq. 7:
