Add 72/63 and 90/12
1st number: 1 9/63, 2nd number: 7 6/12
72/63 + 90/12 is 121/14.
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,
72/63 = 72 × 4/63 × 4 = 288/252 - Likewise, for the 2nd fraction, since 12 × 21 = 252,
90/12 = 90 × 21/12 × 21 = 1890/252 - Add the two like fractions:
288/252 + 1890/252 = 288 + 1890/252 = 2178/252 - 2178/252 simplified gives 121/14
- So, 72/63 + 90/12 = 121/14
In mixed form: 89/14
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