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2x-3y =13 ,7x-2y=20 by substitute method |
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Answer» Answer: By elimination method!! Step-by-step explanation: 2x-3y =13 ]X2 .......... (I) 7x-2y =20 ]X 3 .......... (II) 4x-6y = 26 21x-6y = 60 - + - 17x = 34 x = 34/17 x = 2 Putting "x" in (I) 2x-3y = 13 4-3y = 13 4-13 = 3y 9 = 3y 9/3 = y y = 3 => x= 2 y= 3 ans. |
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