Subtract 20/4 from 70/9, Solve 7 7/9

Subtract 20/4 from 70/9

1^st number: 7 7/9, 2^nd number: 5 0/4

70/9 - 20/4 is 25/9.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 4 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 9 × 4 = 36,
70/9 = 70 × 4/9 × 4 = 280/36
Likewise, for the 2nd fraction, since 4 × 9 = 36,
20/4 = 20 × 9/4 × 9 = 180/36
Subtract the two like fractions:
280/36 - 180/36 = 280 - 180/36 = 100/36
After reducing the fraction, the answer is 25/9
In mixed form: 27/9

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