Add 21/90 and 45/4
1st number: 21/90, 2nd number: 11 1/4
21/90 + 45/4 is 689/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
21/90 = 21 × 2/90 × 2 = 42/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
45/4 = 45 × 45/4 × 45 = 2025/180 - Add the two like fractions:
42/180 + 2025/180 = 42 + 2025/180 = 2067/180 - 2067/180 simplified gives 689/60
- So, 21/90 + 45/4 = 689/60
In mixed form: 1129/60
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