Add 21/10 and 70/63
1st number: 2 1/10, 2nd number: 1 7/63
21/10 + 70/63 is 289/90.
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,
70/63 = 70 × 10/63 × 10 = 700/630 - Add the two like fractions:
1323/630 + 700/630 = 1323 + 700/630 = 2023/630 - 2023/630 simplified gives 289/90
- So, 21/10 + 70/63 = 289/90
In mixed form: 319/90
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