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3.What are those two numbers whose sum is 58 and difference is 28? |
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Answer» let first number be x andSecond number be y according to question, x + y = 58 -------------i equation x- y = 28 -------------- ii equation from i equation, x = 58 - y put the value of x in ii equation, x - y = 2858 - y - y = 2858 - 2y = 2858 - 28 = 2y30 = 2yy = 30 / 2y = 15 put the value y in i equation, x + y = 58x = 58 - yx = 58 - 15x = 43 the value of two numbers are x = 43 and y = 15 |
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