Subtract 7/80 from 72/30, Solve 2 12/30

Subtract 7/80 from 72/30

1^st number: 2 12/30, 2^nd number: 7/80

72/30 - 7/80 is 37/16.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 80 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 30 × 8 = 240,
72/30 = 72 × 8/30 × 8 = 576/240
Likewise, for the 2nd fraction, since 80 × 3 = 240,
7/80 = 7 × 3/80 × 3 = 21/240
Subtract the two like fractions:
576/240 - 21/240 = 576 - 21/240 = 555/240
After reducing the fraction, the answer is 37/16
In mixed form: 25/16

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