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Mathematics 19 Online
OpenStudy (anonymous):

Elimination Method 3x+4y=5 6x+8y=10

OpenStudy (anonymous):

Actually the solution is infinitely many because it is the same line

OpenStudy (ranga):

These two equations have infinite solutions. There is no one unique solution because both equations are one and the same. Just multiply the first equation throughout by 2 and you get the second equation. So the first and second equations are the same. That means you have one equation and two unknowns. You can pick any value for one variable and you can compute the other variable. Since you can pick infinite values for one variable there are infinite solutions.

OpenStudy (anonymous):

Yeah @ranga I realized that after I did the problem, nicely said

OpenStudy (ranga):

Victoria: You may want to delete the first reply because on line 4 only the x variable got multiplied by -2. Every term should be multiplied by -2 to preserve the equation.

OpenStudy (anonymous):

Ok thanks for pointing that out. I meant to do that, and I thought I did but I guess I didn't. :)

OpenStudy (ranga):

No big deal and thanks.

OpenStudy (anonymous):

@1668168 do you understand your welcome @ranga

OpenStudy (anonymous):

thank you

OpenStudy (anonymous):

No problem :)

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