Add 7/42 and 15/30
7/42 + 15/30 is 2/3.
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,
7/42 = 7 × 5/42 × 5 = 35/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
15/30 = 15 × 7/30 × 7 = 105/210 - Add the two like fractions:
35/210 + 105/210 = 35 + 105/210 = 140/210 - 140/210 simplified gives 2/3
- So, 7/42 + 15/30 = 2/3
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