Add 54/20 and 45/7
1st number: 2 14/20, 2nd number: 6 3/7
54/20 + 45/7 is 639/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
54/20 = 54 × 7/20 × 7 = 378/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
45/7 = 45 × 20/7 × 20 = 900/140 - Add the two like fractions:
378/140 + 900/140 = 378 + 900/140 = 1278/140 - 1278/140 simplified gives 639/70
- So, 54/20 + 45/7 = 639/70
In mixed form: 99/70
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