britt08
britt08
08-12-2014
Mathematics
contestada
4y=x+4
X=y+2
Is there a solution
Respuesta :
luana
luana
08-12-2014
[tex] \left \{ {{4y=x+4} \atop {x=y+2}} \right. \\\\Substitute\ second\ equation\ to\ first:\\\\4y=y+2+4\\4y-y=2+4\\3y=6\ \ \ \ \ |:3\\y=2\\\\x=2+2=4\\\\ \left \{ {{y=2} \atop {x=4}} \right. [/tex]
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