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

Find the value of x and y from 7x-15y-2=0 x+2y-3=0

Find the value of x and y from 7x-15y-2=0 x+2y-3=0

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

On comparing the ratios (a_1)/(a_2),(b_1)/(b_2) and (c_1)/(c_2) , and without drawing them, find out whether the lines representing the following pairs of linear equations intersect at a point, are parallel or coincide: (i) 5x-4y+8=0;\ \ \ \ 7x+6y-9=0 (ii) 9x+3y+12=0;\ \ \ 18 x+6y+24=0 (iii) 6x-3y+10=0;\ \ \ 2x-y+9=0

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

If 7x - 15y = 4x + y , find the value of x: y . Hence, use componendo and dividendo to find the values of : (i) (9x + 5y)/(9x - 5y) (iI) (3x^(2) + 2y^(2))/(3x^(2) - 2y^(2))

Evaluate : (viii) (7x + 15y) ( 5x - 4y)

Find the greatest value of x^3y^4 if 2x + 3y = 7 and x>=0,y>=0 .

Find the coordinates of the point at unit distance from the lines 3x-4y + 1 = 0, 8x +6y +1 = 0