Question

how to do this question ​

Answer 1

Answer:

try to make an algebraic equations and understand what it trying to let

Answer 2

Answer:

The original number is 96

Step-by-step explanation:

Let the digit in units place be y

Let the digit in ten's place be 10x

Number formed=10x+y

Number for by reversing the digits=10y+x

According to the problem:

x+y=15 ---i

(10x+y)-(10y+x)=27

=> 10x+y-10y-x=27

=>9x-9y=27

=>9(x-y)=27

=>x-y=3------ii

Adding the two equations i and ii

x+y+x-y=18

=>2x=18

=>x=9

Substituting value of x in equation i;

x+y=15

=>y=15-9

=>y=6

The number=

10x+y

= 10*9+6

96

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