Add 72/45 and 63/12
1st number: 1 27/45, 2nd number: 5 3/12
72/45 + 63/12 is 137/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
72/45 = 72 × 4/45 × 4 = 288/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
63/12 = 63 × 15/12 × 15 = 945/180 - Add the two like fractions:
288/180 + 945/180 = 288 + 945/180 = 1233/180 - 1233/180 simplified gives 137/20
- So, 72/45 + 63/12 = 137/20
In mixed form: 617/20
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