Slove the following equations by elimination method 2x + y =12 3x - y = 13
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Step-by-step explanation:
2x + y - 12 = 0 (equation I)
3x - y - 13 = 0 (equation II)
(equation I) x 3 => 6x + 3y - 36 = 0 (equation III)
(equation II) x 2 => 6x - 2y - 26 = 0 (equation IV)
(equation III) - (equation IV) => 5y - 10 = 0
=> y = 2
Again,
(equation I) => 2x + y - 12 = 0
=> 2x + 2 - 12 = 0
=> 2x + 2 = 12
=> x = 5
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