Add 27/21 and 90/9
1st number: 1 6/21, 2nd number: 10 0/9
27/21 + 90/9 is 79/7.
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,
27/21 = 27 × 3/21 × 3 = 81/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
90/9 = 90 × 7/9 × 7 = 630/63 - Add the two like fractions:
81/63 + 630/63 = 81 + 630/63 = 711/63 - 711/63 simplified gives 79/7
- So, 27/21 + 90/9 = 79/7
In mixed form: 112/7
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