" 13.Solve: "(1)/(2x)-(1)/(y)=-1;(1)/(x)+(1)/(2y)=8,(x!=0,y!=0)

Solve the following system of equations: (1)/(2x)-(1)/(y)=-1(1)/(x)+(1)/(2y)=9, where x!=0,y!=0

Solve for x and y : (1)/(2x) - (1)/(y) = - 1, (1)/(x) + (1)/(2y)= 8 ( x ne 0 , y ne 0 )

Solve the following pairs of equations: (1)/(2x)-(1)/(y)=-1, (1)/(x)+(1)/(2y)= -8, x, y ne 0

Solve y(1+x)dx+x(1+y)dy=0

Solve (x+2)/(y+2)+2=0,(x-4)/(y-2)=(x-1)/(y+7)

Solve the following system of equations: 1/(2x)-1/y=-1 and 1/x+1/(2y)=9,w h e r e x!=0,y!=0.

Solve for x and y:(xy)/(x+y)=(1)/(5),x+y!=0;(xy)/(x-y)=(1)/(7),x-y!=0

Solve for x and y : (1)/( 7x ) + ( 1) /( 6y) = 3, (1)/( 2x) - (1)/( 3y ) = 5 (x ne 0, y ne 0)

Solve each of the following initial value problems: (dy)/(dx)+(2x)/(x^(2)+1)y=(1)/((x^(2)+1)^(2)),y(0)=0( ii) (x^(2)+1)y'-2xy=(x^(4)+2x^(2)+1)cos x,y(0)=0