Question

if 13x+15y=41 and 15x+13y =43 then find the value of x-y​

Answer 1

Step-by-step explanation:

(15)13x+15y=41

(13)15x+13y =43

195x+225y =615

195x+ 169y = 559

subtracting these eqns...

54y=54

y=1

by sub y value in any one of the eqn

we get x= 1/2

Answer 2

Answer:X=2and Y=1

Step-by-step explanation:

Put

13x+15y=41____(1)

15x+13y=43_____(2)

Multiply equation (1) by 13 and (2) by 15 . And substance (1) from (2)

225x + 195y = 645_____(2)

-

169x + 195y = 533_____(1)

__________________________

56x = 112

X = 112÷56

(X=2)

Put x=2 in equation (1)

13×2 + 15y =41

26 + 15y =41

15y= 41 -26

15y = 15

(y=1)

We get x=2 and y =1