Subtract 12/72 from 70/9, Solve 7 7/9

Subtract 12/72 from 70/9

1^st number: 7 7/9, 2^nd number: 12/72

70/9 - 12/72 is 137/18.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 72 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 9 × 8 = 72,
70/9 = 70 × 8/9 × 8 = 560/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
12/72 = 12 × 1/72 × 1 = 12/72
Subtract the two like fractions:
560/72 - 12/72 = 560 - 12/72 = 548/72
After reducing the fraction, the answer is 137/18
In mixed form: 711/18

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