If a, b, c, are in A.P, find value of `|a y+4 5y+7 8y+a3y+5 6y+8 9y+b4y+6 7y+9 10 y+c|`

If a,b,c are in A.P, find value of |[2y+4,5y+7,8y+a],[3y+5,6y+8,9y+b],[4y+6,7y+9,10y+c]|

If a ,\ b ,\ c are in A.P., find the value of |(2y+4, 5y+7, 8y+a),(3y+5, 6y+8, 9y+b),(4y+6, 7y+9 ,10y+c)| .

Using properties of determinant , find the value of |{:( 2y +4, 5y+7, 8y+a),(3y+5,6y+8,9y+b),(4y+6, 7y+9,10y+c):}| ,if a,b and c are in AP.

If 5x + 6y : 8x + 5y = 8 : 9 , find : x : y .

Find value of x and y: (5x-4y+8=0),(7x+6y-9=0)

Find value of x and y: (5x-4y+8=0),(7x+6y-9=0)

If 2x+3y=8 and x y=2 , find the value of 4x^2+9y^2

Evaluate : 7x - 9y + 3 -3x - 5y + 8

If x, y , z are in A.P., then the value of the det (A) is , where A = [(4,5,6,x),(5,6,7,y),(6,7,8,z),(x,y,z,0)]