Add 90/14 and 21/40
1st number: 6 6/14, 2nd number: 21/40
90/14 + 21/40 is 1947/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 14 × 20 = 280,
90/14 = 90 × 20/14 × 20 = 1800/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
21/40 = 21 × 7/40 × 7 = 147/280 - Add the two like fractions:
1800/280 + 147/280 = 1800 + 147/280 = 1947/280 - So, 90/14 + 21/40 = 1947/280
In mixed form: 6267/280
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