Add 21/8 and 45/75
1st number: 2 5/8, 2nd number: 45/75
21/8 + 45/75 is 129/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 75 is 600
Next, find the equivalent fraction of both fractional numbers with denominator 600 - For the 1st fraction, since 8 × 75 = 600,
21/8 = 21 × 75/8 × 75 = 1575/600 - Likewise, for the 2nd fraction, since 75 × 8 = 600,
45/75 = 45 × 8/75 × 8 = 360/600 - Add the two like fractions:
1575/600 + 360/600 = 1575 + 360/600 = 1935/600 - 1935/600 simplified gives 129/40
- So, 21/8 + 45/75 = 129/40
In mixed form: 39/40
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