Question

a number consists of 2 digits whose sum is 12 if 8 is added and the digits are reversed . find the number ​

Answer 1

Answer:

pls mark as brainly

Step-by-step explanation:

Answer 2

Answer:

The value of x = -0.44

The value of y = 20.8

Step-by-step explanation:

Let the number be 10x and y

then,

10x + y = 12 ... equation 1

and,

10y + x = 12 + 8

10y + x = 20 ... equation 2

multiplying ( equation 1 ) by 1 and ( equation 2 ) by 10 we get,

10x + y = 12 ... equation 3

10x + 10y = 200 ... equation 4

Now, Subtracting ( equation 3 ) from ( equation 4 )

10x + 10y = 200

10x + y = 12

- - -

____________

0 + 9y = 188

9y = 188

y = 188/9

y = 20.8

Putting the value in equation 1.

10x + 20.8 = 12

10x + 20.8 = 12

10x = 12 - 20.8

10x = -8.8

x = -8.8/10

x = -0.44

Hence, x = -0.44 and y = 20.8

I hope it helped you !

Thank You.