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\left(-6\right)^{-1}=x\times 9^{-1}
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by x.
-\frac{1}{6}=x\times 9^{-1}
Calculate -6 to the power of -1 and get -\frac{1}{6}.
-\frac{1}{6}=x\times \frac{1}{9}
Calculate 9 to the power of -1 and get \frac{1}{9}.
x\times \frac{1}{9}=-\frac{1}{6}
Swap sides so that all variable terms are on the left hand side.
x=-\frac{1}{6}\times 9
Multiply both sides by 9, the reciprocal of \frac{1}{9}.
x=-\frac{3}{2}
Multiply -\frac{1}{6} and 9 to get -\frac{3}{2}.