Subtract 42/70 from 36/27, Solve 1 9/27

Subtract 42/70 from 36/27

1^st number: 1 9/27, 2^nd number: 42/70

36/27 - 42/70 is 11/15.

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,
36/27 = 36 × 70/27 × 70 = 2520/1890
Likewise, for the 2nd fraction, since 70 × 27 = 1890,
42/70 = 42 × 27/70 × 27 = 1134/1890
Subtract the two like fractions:
2520/1890 - 1134/1890 = 2520 - 1134/1890 = 1386/1890
After reducing the fraction, the answer is 11/15

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