Add 81/63 and 45/30
1st number: 1 18/63, 2nd number: 1 15/30
81/63 + 45/30 is 39/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
81/63 = 81 × 10/63 × 10 = 810/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
45/30 = 45 × 21/30 × 21 = 945/630 - Add the two like fractions:
810/630 + 945/630 = 810 + 945/630 = 1755/630 - 1755/630 simplified gives 39/14
- So, 81/63 + 45/30 = 39/14
In mixed form: 211/14
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