If (a, a-1) is a solution of the equation 5x - 3y = 13, find the value of a.
Putting (a, a-1) in the equation, we get
5a – 3(a-1) = 13
5a – 3a + 3 = 13
2a = 10
a = 5
If x = 3 and y = 4 is a solutions of the equation 5x - 3y = k, find the value of k.
Find the value of k if x=2,y=1 is a solution, of the equation 2x+3y=k.