Add 90/21 and 30/9
1st number: 4 6/21, 2nd number: 3 3/9
90/21 + 30/9 is 160/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
90/21 = 90 × 3/21 × 3 = 270/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
30/9 = 30 × 7/9 × 7 = 210/63 - Add the two like fractions:
270/63 + 210/63 = 270 + 210/63 = 480/63 - 480/63 simplified gives 160/21
- So, 90/21 + 30/9 = 160/21
In mixed form: 713/21
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