Subtract 7/70 from 28/27, Solve 1 1/27

Subtract 7/70 from 28/27

1^st number: 1 1/27, 2^nd number: 7/70

28/27 - 7/70 is 253/270.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 70 is 1890

Next, find the equivalent fraction of both fractional numbers with denominator 1890
For the 1st fraction, since 27 × 70 = 1890,
28/27 = 28 × 70/27 × 70 = 1960/1890
Likewise, for the 2nd fraction, since 70 × 27 = 1890,
7/70 = 7 × 27/70 × 27 = 189/1890
Subtract the two like fractions:
1960/1890 - 189/1890 = 1960 - 189/1890 = 1771/1890
After reducing the fraction, the answer is 253/270

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