Add 81/30 and 54/63
1st number: 2 21/30, 2nd number: 54/63
81/30 + 54/63 is 249/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
81/30 = 81 × 21/30 × 21 = 1701/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
54/63 = 54 × 10/63 × 10 = 540/630 - Add the two like fractions:
1701/630 + 540/630 = 1701 + 540/630 = 2241/630 - 2241/630 simplified gives 249/70
- So, 81/30 + 54/63 = 249/70
In mixed form: 339/70
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