Add 4/16 and 81/90
4/16 + 81/90 is 23/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
4/16 = 4 × 45/16 × 45 = 180/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
81/90 = 81 × 8/90 × 8 = 648/720 - Add the two like fractions:
180/720 + 648/720 = 180 + 648/720 = 828/720 - 828/720 simplified gives 23/20
- So, 4/16 + 81/90 = 23/20
In mixed form: 13/20
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