Add 90/12 and 20/9
1st number: 7 6/12, 2nd number: 2 2/9
90/12 + 20/9 is 175/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
90/12 = 90 × 3/12 × 3 = 270/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
20/9 = 20 × 4/9 × 4 = 80/36 - Add the two like fractions:
270/36 + 80/36 = 270 + 80/36 = 350/36 - 350/36 simplified gives 175/18
- So, 90/12 + 20/9 = 175/18
In mixed form: 913/18
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