Subtract 18/84 from 54/10, Solve 5 4/10

Subtract 18/84 from 54/10

1^st number: 5 4/10, 2^nd number: 18/84

54/10 - 18/84 is 363/70.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 10 × 42 = 420,
54/10 = 54 × 42/10 × 42 = 2268/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
18/84 = 18 × 5/84 × 5 = 90/420
Subtract the two like fractions:
2268/420 - 90/420 = 2268 - 90/420 = 2178/420
After reducing the fraction, the answer is 363/70
In mixed form: 513/70

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