Add 90/25 and 21/70
1st number: 3 15/25, 2nd number: 21/70
90/25 + 21/70 is 39/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 70 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 25 × 14 = 350,
90/25 = 90 × 14/25 × 14 = 1260/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
21/70 = 21 × 5/70 × 5 = 105/350 - Add the two like fractions:
1260/350 + 105/350 = 1260 + 105/350 = 1365/350 - 1365/350 simplified gives 39/10
- So, 90/25 + 21/70 = 39/10
In mixed form: 39/10
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