Add 21/70 and 84/63
1st number: 21/70, 2nd number: 1 21/63
21/70 + 84/63 is 49/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
21/70 = 21 × 9/70 × 9 = 189/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
84/63 = 84 × 10/63 × 10 = 840/630 - Add the two like fractions:
189/630 + 840/630 = 189 + 840/630 = 1029/630 - 1029/630 simplified gives 49/30
- So, 21/70 + 84/63 = 49/30
In mixed form: 119/30
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