1.

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.​

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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