Add 21/7 and 18/30
1st number: 3 0/7, 2nd number: 18/30
21/7 + 18/30 is 18/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
21/7 = 21 × 30/7 × 30 = 630/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
18/30 = 18 × 7/30 × 7 = 126/210 - Add the two like fractions:
630/210 + 126/210 = 630 + 126/210 = 756/210 - 756/210 simplified gives 18/5
- So, 21/7 + 18/30 = 18/5
In mixed form: 33/5
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