Add 45/63 and 80/12
1st number: 45/63, 2nd number: 6 8/12
45/63 + 80/12 is 155/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 12 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
45/63 = 45 × 4/63 × 4 = 180/252 - Likewise, for the 2nd fraction, since 12 × 21 = 252,
80/12 = 80 × 21/12 × 21 = 1680/252 - Add the two like fractions:
180/252 + 1680/252 = 180 + 1680/252 = 1860/252 - 1860/252 simplified gives 155/21
- So, 45/63 + 80/12 = 155/21
In mixed form: 78/21
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