Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 Quantitative Aptitude Algebra Linear Equation in 2 Variable
If the system of linear equations 2x + 3y = 7 and 2ax + (a + b) y = 8 has infinitely many solutions then.
1
a = 2b
2
b = 2a
3
a + 2b = 0
4
2a + b=0