Add 21/10 and 90/63
1st number: 2 1/10, 2nd number: 1 27/63
21/10 + 90/63 is 247/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 10 × 63 = 630,
21/10 = 21 × 63/10 × 63 = 1323/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
90/63 = 90 × 10/63 × 10 = 900/630 - Add the two like fractions:
1323/630 + 900/630 = 1323 + 900/630 = 2223/630 - 2223/630 simplified gives 247/70
- So, 21/10 + 90/63 = 247/70
In mixed form: 337/70
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