Add 12/15 and 20/90
12/15 + 20/90 is 46/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
12/15 = 12 × 6/15 × 6 = 72/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Add the two like fractions:
72/90 + 20/90 = 72 + 20/90 = 92/90 - 92/90 simplified gives 46/45
- So, 12/15 + 20/90 = 46/45
In mixed form: 11/45
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