6x+5y=7x+3y+1=2(x+6y-1)

If (3x -4y) : (2x -3y) = (5x -6y) : (4x -5y) , find : x : y .

Add the algebraic expressions: 4x y^2-7x^2y ,\ 12 x^2y-6x y^2,\ -3x^2y+5x y^2

Find the value fo x:y, if (7x - 15y)/(4x + 6y) = (5)/(6).

Solve the following system of equations: (1)/(7x)+(1)/(6y)=3,quad (1)/(2x)-(1)/(3y)=5

6/(x+y)=7/(x-y)+3 , 1/(2(x+y))=1/(3(x-y))

Solve the following system of equations by matrix method : 5x+7y+2=0 4x+6y+3=0 5x+2y=3 3x+2y=5 3x+4y-5=0 x-y+3=0 3x+y=19 3x-y=23 3x+7y=4 x+2y=-1 3x+y=7 5x+3y=12

Solve by cross-multiplication method. (i) 8x-3y=12,5x=2y +7 (ii) 6x+ 7y -11 =0, 5x+ 2y =13 (iii) (2)/(x)+(3)/(y) =5, (3)/(x) -(1)/(y) +9=0

2x + 3y-5z = 7, x + y + z = 6,3x-4y + 2z = 1, then x =

Find the solution of x + y = 3 and 7x + 6y = 2.