Add 84/4 and 21/90
1st number: 21 0/4, 2nd number: 21/90
84/4 + 21/90 is 637/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
84/4 = 84 × 45/4 × 45 = 3780/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
21/90 = 21 × 2/90 × 2 = 42/180 - Add the two like fractions:
3780/180 + 42/180 = 3780 + 42/180 = 3822/180 - 3822/180 simplified gives 637/30
- So, 84/4 + 21/90 = 637/30
In mixed form: 217/30
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