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The sum of digits of a two-digil-number is7. If the digitsare reversed, the new numbedecreased by 2 equals twice. The original number Find Thenumber. |
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Answer» Step-by-step explanation: Let the UNITS digit be x. The TENS digit =7−x. Original no. =10(7−x)+x=70−9x If DIGITS are REVERSED, no. =10x+7−x=9x+7 9x+7−2=2(70−9x) 9x+5=140−18x 27x=135 x=5 Tens digit =7−5=2 Number =25 |
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