[-7-(6)/(x+y)-(7)/(x-y)=3],[(1)/(2(x+y))-(1)/(3(x-y))=0]

(dy)/(dx)=(3y-x+7)/(x-7y-3)

(x)/(2) - ( y )/(9) = 6, ( x) /( 7) + ( y ) /(3) = 5 .

Simplify : (i) (5x - 9y) - (-7x + y) (ii) (x^(2) -x) -(1)/(2)(x - 3 + 3x^(2)) (iii) [7 - 2x + 5y - (x -y)]-(5x + 3y -7) (iv) ((1)/(3)y^(2) - (4)/(7)y + 5) - ((2)/(7)y - (2)/(3)y^(2) + 2) - ((1)/(7)y - 3 + 2y^(2))

If (x)/(y)=(6)/(5), then the value of ((6)/(7)-(5x-y)/(5x+y)) is equal to (a) (1)/(7)( b) (2)/(7)(c)(3)/(7) (d) (4)/(7)

Solve for x and y : (y+7)/(5)=(2y-x)/(4)+3x-5 (7-5x)/(2)+(3-4y)/(6)=5y-18

Factorize each of the following algebraic expressions: 6x(2x-y)7y(2x-y)2r(y-x)+s(x-y)7a(2x-3)+3b(2x-3)9a(6a-5b)-12a^(2)(6a-5b)

Solve for x and y : x+(y)/(4)=11," "(5x)/(6)-(y)/(3)=7

If x=(1)/(3) and y=(6)/(7) then xy=(y)/(x)= ______.

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

x+7y=10,3x-2y=7