Find the value of y : `frac{4}{7}(y+7)=4`

Find the value of the 7^(4)

If 10y=7x-4 and 12x+18y=1 . Find the value of 4x+6y and 8y-x .

Find the values of x and y. If (i) (x,4)=(-7,y) (ii) (x-3,6)=(4,x+y)

Find the values of x and y from each of the following (i) (x+y,x-2y)=(7,1) (ii) (2x,x+3y)=(4,5)

Find the values of x and y if: (x-1,y+3)=(4,4)

If [[(x+3y),y],[7-x,4]]=[(4,-1),(0,1)], find the values of x and y.

Find the value of 'x' and 'y' if : 2[(x,7),(9,y-5)]+[(6,-7),(4,5)]=[(10,7),(22,15)]

Find the value of (x-y) from the matrix equation 2[(x,5),(7,y-3)]+[(-3,-4),(1,2)]=[(7,6),(15,14)]

If x : y = 4 : 7 , find the value of (3x + 2y) : (5x + y) .

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.