Add 30/80 and 50/21
1st number: 30/80, 2nd number: 2 8/21
30/80 + 50/21 is 463/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 21 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
30/80 = 30 × 21/80 × 21 = 630/1680 - Likewise, for the 2nd fraction, since 21 × 80 = 1680,
50/21 = 50 × 80/21 × 80 = 4000/1680 - Add the two like fractions:
630/1680 + 4000/1680 = 630 + 4000/1680 = 4630/1680 - 4630/1680 simplified gives 463/168
- So, 30/80 + 50/21 = 463/168
In mixed form: 2127/168
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