Subtract 56/9 from 54/70, Solve 54/70

Subtract 56/9 from 54/70

1^st number: 54/70, 2^nd number: 6 2/9

54/70 - 56/9 is -1717/315.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 70 × 9 = 630,
54/70 = 54 × 9/70 × 9 = 486/630
Likewise, for the 2nd fraction, since 9 × 70 = 630,
56/9 = 56 × 70/9 × 70 = 3920/630
Subtract the two like fractions:
486/630 - 3920/630 = 486 - 3920/630 = -3434/630
After reducing the fraction, the answer is -1717/315

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