Hi,

2x+3y=7

 x+y=3



 2x+3y=7

-2x-2y=-6     |multiplying thru by -2 t0 eliminate the x variable

     y = 1  and x = 2  (x = -y+3 )



CHECKING our Answer***

2x+3y=7

 4 + 3 = 7 

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