Add 80/21 and 56/16
1st number: 3 17/21, 2nd number: 3 8/16
80/21 + 56/16 is 307/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
80/21 = 80 × 16/21 × 16 = 1280/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
56/16 = 56 × 21/16 × 21 = 1176/336 - Add the two like fractions:
1280/336 + 1176/336 = 1280 + 1176/336 = 2456/336 - 2456/336 simplified gives 307/42
- So, 80/21 + 56/16 = 307/42
In mixed form: 713/42
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