Add 21/30 and 75/18
1st number: 21/30, 2nd number: 4 3/18
21/30 + 75/18 is 73/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
21/30 = 21 × 3/30 × 3 = 63/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
75/18 = 75 × 5/18 × 5 = 375/90 - Add the two like fractions:
63/90 + 375/90 = 63 + 375/90 = 438/90 - 438/90 simplified gives 73/15
- So, 21/30 + 75/18 = 73/15
In mixed form: 413/15
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