Add 28/35 and 25/40
28/35 + 25/40 is 57/40.
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,
25/40 = 25 × 7/40 × 7 = 175/280 - Add the two like fractions:
224/280 + 175/280 = 224 + 175/280 = 399/280 - 399/280 simplified gives 57/40
- So, 28/35 + 25/40 = 57/40
In mixed form: 117/40
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