Add 15/42 and 20/30
15/42 + 20/30 is 43/42.
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,
15/42 = 15 × 5/42 × 5 = 75/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
20/30 = 20 × 7/30 × 7 = 140/210 - Add the two like fractions:
75/210 + 140/210 = 75 + 140/210 = 215/210 - 215/210 simplified gives 43/42
- So, 15/42 + 20/30 = 43/42
In mixed form: 11/42
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