18. If x + y = 7 and 3x - 2y =11, t...
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18. If x + y = 7 and 3x - 2y =11, then (1) x = 2, y = 5 (2) x = 5, y = 5 (3) X = 5, y = 2 (4) x = 0, y = 3

11th - 12th Class
Maths
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18. (3) Given equations are ( x+y=7 ) and ( 3 x-2 y=11 ) On multiplying Eq. (i) by 2 and then adding Eq. (ii), we get [ 5 x=25 ] ( Rightarrow quad x=5 ) ( therefore quad 5+y=7 ) ( Rightarrow quad y=2 )
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