Add 20/30 and 50/21
1st number: 20/30, 2nd number: 2 8/21
20/30 + 50/21 is 64/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 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 21 × 10 = 210,
50/21 = 50 × 10/21 × 10 = 500/210 - Add the two like fractions:
140/210 + 500/210 = 140 + 500/210 = 640/210 - 640/210 simplified gives 64/21
- So, 20/30 + 50/21 = 64/21
In mixed form: 31/21
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