Add 80/84 and 4/80
80/84 + 4/80 is 421/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 84 × 20 = 1680,
80/84 = 80 × 20/84 × 20 = 1600/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
4/80 = 4 × 21/80 × 21 = 84/1680 - Add the two like fractions:
1600/1680 + 84/1680 = 1600 + 84/1680 = 1684/1680 - 1684/1680 simplified gives 421/420
- So, 80/84 + 4/80 = 421/420
In mixed form: 11/420
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