Add 90/10 and 21/28
1st number: 9 0/10, 2nd number: 21/28
90/10 + 21/28 is 39/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 10 × 14 = 140,
90/10 = 90 × 14/10 × 14 = 1260/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
21/28 = 21 × 5/28 × 5 = 105/140 - Add the two like fractions:
1260/140 + 105/140 = 1260 + 105/140 = 1365/140 - 1365/140 simplified gives 39/4
- So, 90/10 + 21/28 = 39/4
In mixed form: 93/4
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