Add 9/40 and 81/70
1st number: 9/40, 2nd number: 1 11/70
9/40 + 81/70 is 387/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
9/40 = 9 × 7/40 × 7 = 63/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
81/70 = 81 × 4/70 × 4 = 324/280 - Add the two like fractions:
63/280 + 324/280 = 63 + 324/280 = 387/280 - So, 9/40 + 81/70 = 387/280
In mixed form: 1107/280
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