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jenni_fowler
 3 years ago
solve the system of equations y=2x10 and xy=7
jenni_fowler
 3 years ago
solve the system of equations y=2x10 and xy=7

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sumanthy
 3 years ago
Best ResponseYou've already chosen the best response.1By substituion: put y=2x10 in xy=7 x(2x10)=7 x2x+10=7 x=710 x=3 x=3 Put x=3 in y=2x10 y=2*310 y=4

sumanthy
 3 years ago
Best ResponseYou've already chosen the best response.1Graphically you can draw the lines and find the point of intersection.

sumanthy
 3 years ago
Best ResponseYou've already chosen the best response.1There is one more method called Elimination :)

shahzadjalbani
 3 years ago
Best ResponseYou've already chosen the best response.1y=2x10 can be changed into 2xy=10 now subtract equation 2 from 1 2xy=10 xy=7  x=3 put value of x in first equation you will get value of y.

sumanthy
 3 years ago
Best ResponseYou've already chosen the best response.1shahzadjalbani gave elimination method :)

jenni_fowler
 3 years ago
Best ResponseYou've already chosen the best response.0ah i like that way better i think
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