Subtract 70/30 from 75/27, Solve 2 21/27

Subtract 70/30 from 75/27

1^st number: 2 21/27, 2^nd number: 2 10/30

75/27 - 70/30 is 4/9.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 30 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 27 × 10 = 270,
75/27 = 75 × 10/27 × 10 = 750/270
Likewise, for the 2nd fraction, since 30 × 9 = 270,
70/30 = 70 × 9/30 × 9 = 630/270
Subtract the two like fractions:
750/270 - 630/270 = 750 - 630/270 = 120/270
After reducing the fraction, the answer is 4/9

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