Add 28/35 and 20/40
28/35 + 20/40 is 13/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 35 × 8 = 280,
28/35 = 28 × 8/35 × 8 = 224/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
20/40 = 20 × 7/40 × 7 = 140/280 - Add the two like fractions:
224/280 + 140/280 = 224 + 140/280 = 364/280 - 364/280 simplified gives 13/10
- So, 28/35 + 20/40 = 13/10
In mixed form: 13/10
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