Question

12x + 13y=51; 13x+12y = 49
$aata \: pahije \: ansar$
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Answer 1

12x + 13y=51 - eq1

13x+12y = 49 - eq2

eq1 + eq2

=25x + 25y =100

=x + y = 4 eq3

Eq1 - Eq2

= x - y = 2

x + y = 4 - Eq3

x - y = 2 - Eq4

add both

=2x = 6

x = 3

3 + y =4

Y = 1

hence x = 3 and y =1