Respuesta :

SikshyaGiri

Answer:

a) x=2, y=-1

Step-by-step explanation:

Make x+y=1 equations number 1 And

x-y=3 another

x+y=1

x=1-y

then substituting the value of x in equations 2

We get,

x-y=3

1-y-y=3

-2y=3-1

y=2/-2

=-1

taking equations 1

x+y=1

x-1=1

x=2

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