Add 20/42 and 10/30
20/42 + 10/30 is 17/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
10/30 = 10 × 7/30 × 7 = 70/210 - Add the two like fractions:
100/210 + 70/210 = 100 + 70/210 = 170/210 - 170/210 simplified gives 17/21
- So, 20/42 + 10/30 = 17/21
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