Add 20/28 and 35/80
20/28 + 35/80 is 129/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
20/28 = 20 × 20/28 × 20 = 400/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
35/80 = 35 × 7/80 × 7 = 245/560 - Add the two like fractions:
400/560 + 245/560 = 400 + 245/560 = 645/560 - 645/560 simplified gives 129/112
- So, 20/28 + 35/80 = 129/112
In mixed form: 117/112
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