Add 15/42 and 30/70
15/42 + 30/70 is 11/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 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 70 × 3 = 210,
30/70 = 30 × 3/70 × 3 = 90/210 - Add the two like fractions:
75/210 + 90/210 = 75 + 90/210 = 165/210 - 165/210 simplified gives 11/14
- So, 15/42 + 30/70 = 11/14
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