Question

12x+13y=49. 13x+12y=51

Answer 1

Linear equation in two variable

Answer 2

Given : 12x+13y=49.

13x+12y=51

To Find : Solve for  x and y

Solution:

12x+13y=49.   Eq1

13x+12y=51    Eq2

Eq1 + Eq2

=> 25x + 25y = 100

=> x + y  =  4    Eq3

Eq2 - Eq1

=> x  - y  = 2   Eq4

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

Learn More

Solve the following x+y/xy=5 and x-5/xy=7 - Brainly.in

brainly.in/question/8168066

solve for x and y : x+y/xy=2,xy/=6

brainly.in/question/12892518