Add 18/63 and 90/72
1st number: 18/63, 2nd number: 1 18/72
18/63 + 90/72 is 43/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
18/63 = 18 × 8/63 × 8 = 144/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
90/72 = 90 × 7/72 × 7 = 630/504 - Add the two like fractions:
144/504 + 630/504 = 144 + 630/504 = 774/504 - 774/504 simplified gives 43/28
- So, 18/63 + 90/72 = 43/28
In mixed form: 115/28
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