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Solve by elimination method: 1.217x+131y=913 131x+217y=827 2.5x+6y=13 3/x+4y=7

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In 1. add 1st & 2nd eq. & then divide whole by 348.Then subtract 1st and 2nd eq. & then divide by 86.then add both the equations obtained you will get the answer. x=3 & y=2 possibly my answer would be wrong but my logic is 100% correct.