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Would anyone be so gracious as to helping me get a better understanding of the dreadful algebra!??!?!!? :)
Explain, in complete sentences, how you would use the elimination method to solve the following system of equations. Provide the solution to the system.
2x + 9y = 4
3x + 7y = 7
 one year ago
 one year ago
Would anyone be so gracious as to helping me get a better understanding of the dreadful algebra!??!?!!? :) Explain, in complete sentences, how you would use the elimination method to solve the following system of equations. Provide the solution to the system. 2x + 9y = 4 3x + 7y = 7
 one year ago
 one year ago

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VenomblastBest ResponseYou've already chosen the best response.0
1st you want to figure out which variable you want to solve
 one year ago

VenomblastBest ResponseYou've already chosen the best response.0
ok. oh n btw i replied. the answer is A!!! fromt he previous question
 one year ago

InsanelyChaoticBest ResponseYou've already chosen the best response.0
thank you love!!!! :)))))))))))) I got that answer after I "closed" the question box
 one year ago

VenomblastBest ResponseYou've already chosen the best response.0
i said it 2 times. lol anywayz let do this problem
 one year ago

InsanelyChaoticBest ResponseYou've already chosen the best response.0
thank you nonetheless! ok let's go!
 one year ago

terenzreignzBest ResponseYou've already chosen the best response.1
Hey, an intermission, if you would oblige me... if x = y, then ax = ay right?
 one year ago

terenzreignzBest ResponseYou've already chosen the best response.1
And if a = b and c = d then a + c = b + d Don't worry, these are relevant, we'll use them.
 one year ago

InsanelyChaoticBest ResponseYou've already chosen the best response.0
Thank you kind sir....! @terenzreignz
 one year ago

VenomblastBest ResponseYou've already chosen the best response.0
man i hate the ax=ay method
 one year ago

terenzreignzBest ResponseYou've already chosen the best response.1
So you have 2x + 9y = 4 From our first rule, we can get 7(2x + 9y) = 7(4) 14x + 63y = 28, let's stop here, and call this "equation 1" You also have 3x + 7y = 7 Again, from our first rule, we can get 9(3x + 7y) = 9(7) 27x  63y = 63, stop here again, call this "equation 2" Are you getting it so far?
 one year ago

InsanelyChaoticBest ResponseYou've already chosen the best response.0
Yes, I've gone thru this a time before! But one question, how did you get the "7" in 7(2x+9y)
 one year ago

InsanelyChaoticBest ResponseYou've already chosen the best response.0
If you don't mind me asking.....! :))
 one year ago

InsanelyChaoticBest ResponseYou've already chosen the best response.0
Here's a joke: Subway called, they want their 6 inch back ;)
 one year ago

InsanelyChaoticBest ResponseYou've already chosen the best response.0
Another joke/flattery I made up: Verizon called, they want their "SMART" phone back
 one year ago

terenzreignzBest ResponseYou've already chosen the best response.1
Ok... You said you wanted to solve for x first (personally, I'd have gone for y first) So, we have to somehow get rid of the y. To do that, you have to make it so that the coefficient (the number that goes beside the letter) of the y in the first equation is equal to the NEGATIVE of the coefficient of the y in the second equation. In the first equation, the coeff of y was "9" and in the second, it was "7" You need to get what's called their "least common multiple" And that's 63. 63/9 is 7, so that's what I multiply to the first equation. 63/7 is 9, so that's what I multiply to the second equation, and then I NEGATED it (multiplied it by 1)
 one year ago

terenzreignzBest ResponseYou've already chosen the best response.1
You'll see why this is done, when I proceed... shall I?
 one year ago

InsanelyChaoticBest ResponseYou've already chosen the best response.0
oh my god....this is actually making sense!!!!! :')
 one year ago

terenzreignzBest ResponseYou've already chosen the best response.1
Remember our second rule? if a=b and c=d then a+c = b+d ? We'll just apply that, on a larger scale, sort of...
 one year ago

InsanelyChaoticBest ResponseYou've already chosen the best response.0
I remember! I will, I promise!
 one year ago

terenzreignzBest ResponseYou've already chosen the best response.1
All right, equation 1: 14x + 63y = 28 equation 2: 27x  63y = 63 Remember these?
 one year ago

terenzreignzBest ResponseYou've already chosen the best response.1
Now we use the second rule, we add both expressions on the left, and equate them to the sum of the expressions on the right: 14x + 63y  27x  63y = 28 + 63
 one year ago

terenzreignzBest ResponseYou've already chosen the best response.1
Notice something?
 one year ago

VenomblastBest ResponseYou've already chosen the best response.0
combine like term *cough**cough*
 one year ago

InsanelyChaoticBest ResponseYou've already chosen the best response.0
I'm writing down the steps to refer to, but yes, I notice that in order to prolong the steps, I'll have to combine
 one year ago

InsanelyChaoticBest ResponseYou've already chosen the best response.0
Get x by itself
 one year ago

terenzreignzBest ResponseYou've already chosen the best response.1
And then you'll have reduced it to a linear equation in one variable. Solve for x, and you're almost done! Just substitute that x which you get for the x in either one of the equations you started with, and then solve for y, and then you'll be done!
 one year ago

InsanelyChaoticBest ResponseYou've already chosen the best response.0
oh my....I appreciate your efforts!!
 one year ago

terenzreignzBest ResponseYou've already chosen the best response.1
I appreciate your appreciation; have fun! :)
 one year ago

InsanelyChaoticBest ResponseYou've already chosen the best response.0
I will never have fun with math, but thank you:)
 one year ago
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