For what values of y does the following equation have no solutions for x?

xy+6y+20x+4=1

For what values of y does the following equation have no solutions for x? xy+6y+20x+4=1

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\(xy+6y+20x+4=1 \\ x(y+20)=1-4-6y\\ x=-\dfrac{3+6y}{y+20}\)

For y = - 20 does the equation have no solution for x.