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" 5."(1)/(x+y)+(1)/(x-y)=7;(1)/(x+y)-(1)...

" 5."(1)/(x+y)+(1)/(x-y)=7;(1)/(x+y)-(1)/(x-y)=1

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

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)

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(xy)/(x-y)=(1)/(2);(xy)/(x+y)=(1)/(5) wherex +y!=0;x-y!=0

If 5^(x)=(0.5)^(y)=1000,then(1)/(x)-(1)/(y)=