using elimination method (c) 11x + 4y = 12
9x - 4y = 8
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Given: 11x + 4y = 12 ..(i)
9x - 4y = 8 ..(ii)
now by elimination method,
11x + 4y = 12
9x - 4y = 8
_+________+____
20x = 20
⇒ x = 1
now by putting the value of x in eq (1)
⇒ 11x + 4y = 12
⇒ 4y = 12 - 11(1)
⇒ y = 1
∴ So the value of x and y = 1 and 1 respectively.
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