Solve for x
x = -\frac{400}{71} = -5\frac{45}{71} \approx -5.633802817
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9x-80x=400
Subtract 80x from both sides.
-71x=400
Combine 9x and -80x to get -71x.
x=\frac{400}{-71}
Divide both sides by -71.
x=-\frac{400}{71}
Fraction \frac{400}{-71} can be rewritten as -\frac{400}{71} by extracting the negative sign.
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