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Mathematics 10 Online
OpenStudy (anonymous):

Use elimination to solve the system of equations given by 10x – 40y = 60 and 15x + 40y = -10

hartnn (hartnn):

add the 2 equations what do u get ?

OpenStudy (anonymous):

25x=50

hartnn (hartnn):

correct :) so x= ... ?

OpenStudy (anonymous):

2

hartnn (hartnn):

yes plug this in any of the above equations to get y :)

OpenStudy (anonymous):

ok

hartnn (hartnn):

what did u get y as ?

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