" (a) "x+y=14

Solve the following pair of linear equations by the substitutation method: (i) x+y=14 , x-y=4

Find the value of 27 x^3+\ 8y^3, if (i) 3x+2y=14 and x y=8 (ii) 3x+2y=20\ and x y=(14)/9

Find the values of x and y which satisfy both the equations: x-y=11 and 4x+y=14.

If x+y=12\ a n d\ x y=14 , find the value of x^2+y^2dot

Solve the following simultaneous equations : (i) x+y=7, x-y=5 (ii) x+y=10, x-y=16. (iii) 3x+y=14, x-y=2.

{:((4)/(x) + 3y = 14),((3)/(x) - 4y = 23):}

Find the minimum and maximum value of function Z=3x+4y subject to constraints are x>=0,y>=0,x+2y<=10 and 2x+y<=14

Solve the pair of equations graphically : 4x-y=4 and 3x+2y=14