Question

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Answer 1

1)(3x+1)/(5x-1)*x(5x-1)/(3x(2x-y)+(2x-y))=(3x+1)/(5x-1)*x(5x-1)/(2x-y)(3x+1)=x/2x-y
2)1+x/2x-y-(6x^2-2y^2+xy)/(2x-y)(2x+y)=(4x^2-y^2+2x^2+xy-6x^2+2y^2-xy)/(2x-y)(2x+y)=
y^2/(2x-y)(2x+y)
3)y^2/(2x-y)(2x+y)*x(2x-y)/y=xy/(2x+y)