Solve for x
x = \frac{50}{21} = 2\frac{8}{21} \approx 2.380952381
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100=42x
Multiply both sides of the equation by 1680, the least common multiple of 1680,40.
42x=100
Swap sides so that all variable terms are on the left hand side.
x=\frac{100}{42}
Divide both sides by 42.
x=\frac{50}{21}
Reduce the fraction \frac{100}{42} to lowest terms by extracting and canceling out 2.
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