Question 47914
first of all i want to say in elimination method we have to eliminate x or y in any of the equation.
let us eliminate x from 4x - 3y= 24, we get
x = 6 + (3/4)y ....................(i)

now put this value of x in the other equation i.e. 7x + 5y = 42
=>   7 * (6 + (3/4)y)+ 5y = 42
=>   42 + (21/4)y + 5y = 42
=>   (21/4)y + 5y = 0
=>   y[(21/4) + 5] = 0
=>   y = 0

Putting the value of y in the equation (i), we get:
x = 6