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, y=a-1
2(2a+1) - 3(a-1) + 5=0
4a+2-3a+3+5=0
a+10=0
a=-10