NDA2012MathematicsDeterminantsActual
The solution of the simultaneous linear equations 2 x+y=6 and 3 y=8+4 x will also be satisfied by which one of the following linear equations?
Options
- Ax+y=5
- B2 x+y=9
- C2 x-3 y=10
- D2 x+3 y=6
Correct answer
A. x+y=5
Step-by-step solution
aligned 2 x+y & =6 2 x=6-y 3 y & =8+2(2 x) 3 y & =8+2(6-y) 3 y & =8+12-2 y 5 y & =20 y & =4 2 x & =2 x & =1 . aligned