Add 75/21 and 5/80
1st number: 3 12/21, 2nd number: 5/80
75/21 + 5/80 is 407/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
75/21 = 75 × 80/21 × 80 = 6000/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
5/80 = 5 × 21/80 × 21 = 105/1680 - Add the two like fractions:
6000/1680 + 105/1680 = 6000 + 105/1680 = 6105/1680 - 6105/1680 simplified gives 407/112
- So, 75/21 + 5/80 = 407/112
In mixed form: 371/112
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