Question

If X= 2 a + 1 and Y = a - 1 is the solution of equation 2x - 3 Y + 5 = 0 find the value of a

Answer 1

X = 2a+1 ,and Y= a-1 is solution of the equation so these X and Y will satisfy the equation.
So putting them into equation we get

=> 2* (2a+1) - 3* (a-1) +5 =0
=> 4a + 2 -3a + 3 +5 =0
=> a + 10 =0
=> a = -10