Solve\frac{x}{a}+\frac{y}{b}=2, \quad a x-b y=a^{2}-b^{2} by using sub – InterviewSolution

1.	Solve\frac{x}{a}+\frac{y}{b}=2, \quad a x-b y=a^{2}-b^{2} by using substitution method.
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