Add 12/42 and 15/35
12/42 + 15/35 is 5/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
12/42 = 12 × 5/42 × 5 = 60/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
15/35 = 15 × 6/35 × 6 = 90/210 - Add the two like fractions:
60/210 + 90/210 = 60 + 90/210 = 150/210 - 150/210 simplified gives 5/7
- So, 12/42 + 15/35 = 5/7
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