mukerian2
mukerian2
21-11-2016
Mathematics
contestada
Xy=30
3x-y=-9
Solve by the substitution method
Respuesta :
Аноним
Аноним
21-11-2016
If XY = 30, then we can make x=30/y.First:3x=-9+yx=-3+y/3By substitution, we get:30/y=3+y/330=3y+3y/y30=3y+33y=27y=9Hope this helps!
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