Add 70/40 and 81/7
1st number: 1 30/40, 2nd number: 11 4/7
70/40 + 81/7 is 373/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
70/40 = 70 × 7/40 × 7 = 490/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
81/7 = 81 × 40/7 × 40 = 3240/280 - Add the two like fractions:
490/280 + 3240/280 = 490 + 3240/280 = 3730/280 - 3730/280 simplified gives 373/28
- So, 70/40 + 81/7 = 373/28
In mixed form: 139/28
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