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प्रश्न
Solve the following simultaneous equation.
2x + y = -2 ; 3x - y = 7
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उत्तर
2x + y = -2 ...(I)
3x - y = 7 ...(II)
Adding (I) and (II)
5x = 5
⇒ x = 1
Putting the value of x in (I)
2 × 1 + y = -2
⇒ 2 + y = -2
⇒ y = - 4
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