Question

2) Solve the following pairs of linear equations by cross-multiplication method:
(1) x - y = a + b
ax+by=a^2-b^2​

Answer 1

Answer:

$\frac{x}{a} + \frac{y}{b} = 2$

ax+by = a²+b²

Given that, pair of equations is

$\frac{x}{a} + \frac{y}{b} = 2 ⇒ \frac{x}{a} + \frac{y}{b} - 2 = 0$

ax+by = a² + b² ⇒ax+by - (a²- b²) = 0