Add 21/90 and 3/8
21/90 + 3/8 is 73/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
21/90 = 21 × 4/90 × 4 = 84/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
3/8 = 3 × 45/8 × 45 = 135/360 - Add the two like fractions:
84/360 + 135/360 = 84 + 135/360 = 219/360 - 219/360 simplified gives 73/120
- So, 21/90 + 3/8 = 73/120
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