Solve for x
x = \frac{116}{21} = 5\frac{11}{21} \approx 5.523809524
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521-42x+x^{2}-x^{2}=289
Add 421 and 100 to get 521.
521-42x=289
Combine x^{2} and -x^{2} to get 0.
-42x=289-521
Subtract 521 from both sides.
-42x=-232
Subtract 521 from 289 to get -232.
x=\frac{-232}{-42}
Divide both sides by -42.
x=\frac{116}{21}
Reduce the fraction \frac{-232}{-42} to lowest terms by extracting and canceling out -2.
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