Subtract 21/72 from 70/45
1st number: 1 25/45, 2nd number: 21/72
70/45 - 21/72 is 91/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
70/45 = 70 × 8/45 × 8 = 560/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Subtract the two like fractions:
560/360 - 105/360 = 560 - 105/360 = 455/360 - After reducing the fraction, the answer is 91/72
- In mixed form: 119/72
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