Subtract 28/80 from 72/70
1st number: 1 2/70, 2nd number: 28/80
72/70 - 28/80 is 19/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
72/70 = 72 × 8/70 × 8 = 576/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
28/80 = 28 × 7/80 × 7 = 196/560 - Subtract the two like fractions:
576/560 - 196/560 = 576 - 196/560 = 380/560 - After reducing the fraction, the answer is 19/28
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