Question

ax +by = a-b bx-ay =a+bsolve -

Answer 1

ax+by=a-b.....1

bx-ay=a+b.......2

Multiplying 1 by a and 2 by b,we get

a2x +aby=a2-ab

b2x-aby=ab+b2

Now adding them ,we get

a2x+b2y=a2+b2

X(a2+b2)=a2+b2

X=a2+b2÷a2+b2

X=1

And

ax+by=a-b

a+by=a-b(x=1)

a-a+by=-b

y=-b÷b

y=-1