gallla
gallla
22-02-2019
Mathematics
contestada
PLEASE SOMEONE HELP ASAP PLEASE
Respuesta :
akephd
akephd
22-02-2019
X+y=12
And -x=-y-10 which if multiply through by -1 is same as x=y+10
So substitute this in first equation.
Y+10+y=12
2y=2
y=1
So x+1=12 so x=11
Check in other equation: -11=-1-10 so -11=-11 it works
So...x=11, y=1
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