Add 7/2 and 20/90
1st number: 3 1/2, 2nd number: 20/90
7/2 + 20/90 is 67/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
7/2 = 7 × 45/2 × 45 = 315/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Add the two like fractions:
315/90 + 20/90 = 315 + 20/90 = 335/90 - 335/90 simplified gives 67/18
- So, 7/2 + 20/90 = 67/18
In mixed form: 313/18
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