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2\left(-1.6\right)=9xy+y\left(-5\right)
Multiply both sides of the equation by y.
-3.2=9xy+y\left(-5\right)
Multiply 2 and -1.6 to get -3.2.
9xy+y\left(-5\right)=-3.2
Swap sides so that all variable terms are on the left hand side.
9xy=-3.2-y\left(-5\right)
Subtract y\left(-5\right) from both sides.
9xy=-3.2+5y
Multiply -1 and -5 to get 5.
9yx=5y-3.2
The equation is in standard form.
\frac{9yx}{9y}=\frac{5y-3.2}{9y}
Divide both sides by 9y.
x=\frac{5y-3.2}{9y}
Dividing by 9y undoes the multiplication by 9y.
x=\frac{5}{9}-\frac{16}{45y}
Divide 5y-3.2 by 9y.
2\left(-1.6\right)=9xy+y\left(-5\right)
Variable y cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by y.
-3.2=9xy+y\left(-5\right)
Multiply 2 and -1.6 to get -3.2.
9xy+y\left(-5\right)=-3.2
Swap sides so that all variable terms are on the left hand side.
\left(9x-5\right)y=-3.2
Combine all terms containing y.
\frac{\left(9x-5\right)y}{9x-5}=-\frac{3.2}{9x-5}
Divide both sides by -5+9x.
y=-\frac{3.2}{9x-5}
Dividing by -5+9x undoes the multiplication by -5+9x.
y=-\frac{16}{5\left(9x-5\right)}
Divide -3.2 by -5+9x.
y=-\frac{16}{5\left(9x-5\right)}\text{, }y\neq 0
Variable y cannot be equal to 0.