Add 20/30 and 9/7
1st number: 20/30, 2nd number: 1 2/7
20/30 + 9/7 is 41/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
20/30 = 20 × 7/30 × 7 = 140/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
9/7 = 9 × 30/7 × 30 = 270/210 - Add the two like fractions:
140/210 + 270/210 = 140 + 270/210 = 410/210 - 410/210 simplified gives 41/21
- So, 20/30 + 9/7 = 41/21
In mixed form: 120/21
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