Add 63/10 and 54/21
1st number: 6 3/10, 2nd number: 2 12/21
63/10 + 54/21 is 621/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
63/10 = 63 × 21/10 × 21 = 1323/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
54/21 = 54 × 10/21 × 10 = 540/210 - Add the two like fractions:
1323/210 + 540/210 = 1323 + 540/210 = 1863/210 - 1863/210 simplified gives 621/70
- So, 63/10 + 54/21 = 621/70
In mixed form: 861/70
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