Subtract 72/9 from 70/80
1st number: 70/80, 2nd number: 8 0/9
70/80 - 72/9 is -57/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
70/80 = 70 × 9/80 × 9 = 630/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
72/9 = 72 × 80/9 × 80 = 5760/720 - Subtract the two like fractions:
630/720 - 5760/720 = 630 - 5760/720 = -5130/720 - After reducing the fraction, the answer is -57/8
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