Question

The solution set of the system of equation 11x – 12y = 23, 12x – 11y = 23 is​

Answer 1

Step-by-step explanation:

x= 1 and y= -1 is the right answer

Answer 2

Given :  11x – 12y = 23, 12x – 11y = 23

To Find : Solution set ( Value for x and y )

Solution:

11x  - 12y   = 23    Eq1

12x  - 11 y    = 23    Eq2

Adding both

=> 23x  - 23y  = 46

=> x - y  = 2    ( Eq3)

Subtracting Eq 1 from Eq2

=> x  + y  = 0   Eq2

x - y  = 2

x  + y  = 0

=> 2x  = 2

=> x = 1

and  y  = - 1

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