Add 21/45 and 9/8
1st number: 21/45, 2nd number: 1 1/8
21/45 + 9/8 is 191/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
21/45 = 21 × 8/45 × 8 = 168/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
9/8 = 9 × 45/8 × 45 = 405/360 - Add the two like fractions:
168/360 + 405/360 = 168 + 405/360 = 573/360 - 573/360 simplified gives 191/120
- So, 21/45 + 9/8 = 191/120
In mixed form: 171/120
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