Aili17
Aili17
11-11-2018
Mathematics
contestada
if 3x+2y=14 and 2x+y=7, then x+y=
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MargauxStrb
MargauxStrb
11-11-2018
Out of the second equation y=7-2x
Into the first equation
3x+14-4x=14
14-x=14
X=0
Now fill back into the second
Y=7
So x+y is 7
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