Add 45/7 and 15/40
1st number: 6 3/7, 2nd number: 15/40
45/7 + 15/40 is 381/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
45/7 = 45 × 40/7 × 40 = 1800/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
15/40 = 15 × 7/40 × 7 = 105/280 - Add the two like fractions:
1800/280 + 105/280 = 1800 + 105/280 = 1905/280 - 1905/280 simplified gives 381/56
- So, 45/7 + 15/40 = 381/56
In mixed form: 645/56
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