Add 21/4 and 90/75
1st number: 5 1/4, 2nd number: 1 15/75
21/4 + 90/75 is 129/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 4 × 75 = 300,
21/4 = 21 × 75/4 × 75 = 1575/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
90/75 = 90 × 4/75 × 4 = 360/300 - Add the two like fractions:
1575/300 + 360/300 = 1575 + 360/300 = 1935/300 - 1935/300 simplified gives 129/20
- So, 21/4 + 90/75 = 129/20
In mixed form: 69/20
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