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anonymous
 5 years ago
How do you solve a system of linear equations??
anonymous
 5 years ago
How do you solve a system of linear equations??

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I like to subtract multiples of the equations to solve for one of the variables, then back substitute.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Okay I have an example can you show me how to do it? y=2x+6 and 4x2y=13

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0it's in my math book. umm,

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok umm, i'll do the second one for you. 4x2y=13 4x=15y x=15y/4

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Well here let me type it the right way I gues y=2x+6 4x2y=13 now is that easier??

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0umm that's the same as before.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I know but it's grouped together how do they work together or correlate?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Certainly. \[y=2x+6\implies 2y = 4x + 12 \implies 4x + 2y = 12\] Since we have another equation with a 2y we can just add the left and right sides of both equations together \(4x+2y=12\) +\(4x2y=13\) \[\implies 0 = 25\] So there is no solution.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Thankyou sooo much!! I'm gonna work on another problem like that one and I need you to see if I'm right okay?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You can actually note that those two equations have no solution because the lines are parallel so they'll never cross eachother. That's what you're finding when you solve these systems is where the graphs intersect.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ohh! Okay I gotcha now that makes more sence.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Now I'm officially lost on this equation: 4x+2y=10 6x2y=12 anad I got 2x+y=2 ;what do I do from there??

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So close! But 2y 2y = 0 not y

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Well I know but I didnt know whether to put y or 0y...so do I keep going from there or??

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.00y is correct. but that's the same as 0 which is the same as not putting it at all.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So substitute that in for x in either one of your original equations to solve for y.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.03, so the answer would be (1,3)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Alright. Well, thankyou so much for helping me!(: that makes way more sence now
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