Question

(ii) ax + by=c
bx + ay = 1+c
​

Answer 1

ax + by = c divide the equation with 'a' then x+b/ay =c/a -----(1)

bx + ay = 1+c divide the eqn with 'b' then

x+a/by =1+c/b ------(2)

subtracting the eqn 2 from 1

b/a -a/b y = c/a -1+c/b

b²-a²y = bc-ac-a

y= c(b-a) -a/b²-a²

substitute y value in any of the eqn u can get x