Add 90/7 and 21/63
1st number: 12 6/7, 2nd number: 21/63
90/7 + 21/63 is 277/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
90/7 = 90 × 9/7 × 9 = 810/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
21/63 = 21 × 1/63 × 1 = 21/63 - Add the two like fractions:
810/63 + 21/63 = 810 + 21/63 = 831/63 - 831/63 simplified gives 277/21
- So, 90/7 + 21/63 = 277/21
In mixed form: 134/21
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