Solve for x
x = \frac{685}{7} = 97\frac{6}{7} \approx 97.857142857
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-4.2x=225-636
Subtract 636 from both sides.
-4.2x=-411
Subtract 636 from 225 to get -411.
x=\frac{-411}{-4.2}
Divide both sides by -4.2.
x=\frac{-4110}{-42}
Expand \frac{-411}{-4.2} by multiplying both numerator and the denominator by 10.
x=\frac{685}{7}
Reduce the fraction \frac{-4110}{-42} to lowest terms by extracting and canceling out -6.
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