Question

substitute 3x-y=3,9x-3y=9

Answer 1

3x y = 3 3x = y + 3 x = ( + 3)/3 Putting value of x in (2) 9x 3y = 9 9(( + 3)/3) 3 =9 3(y + 3) 3y = 9 3y + 9 3y = 9 3y 3y + 9 = 9 0 + 9 = 9 9 = 9