state gov Allahabad High Court Group D Mock Test Series 2024 Quantitative Aptitude Algebra Linear Equation in 2 Variable
समीकरणों के प्रणाली ax + by - a + b = 0 और bx - ay - a - b = 0 के हल हैं?
1
x = a + b, y = a - b
2
x = -a + b, y = -a - b
3
x = 1, y = -1
4
x = 0, y = 0