Question

solve for x and y of the following eq.
ax+by=b=13
bx-ay=-a-b​

Answer 1

Answer:

The given system of equations may be written as

ax+by−(a−b)=0

bx−ay−(a+b)=0

By cross-multiplication, we get

⇒b×−(a+b)−(−a)×−(a−b)x=a×−(a+b)−b×−(a−b)−y=−a2−b21

⇒−b(a+b−a(a−b)x=−a(a+b)+b(a−b)−y=−(a2+b2)1

⇒b2−a2x=−a2−b2−y=−(a2+b2)1

⇒−(a2+b2)x=