Add 18/42 and 12/15
18/42 + 12/15 is 43/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
12/15 = 12 × 14/15 × 14 = 168/210 - Add the two like fractions:
90/210 + 168/210 = 90 + 168/210 = 258/210 - 258/210 simplified gives 43/35
- So, 18/42 + 12/15 = 43/35
In mixed form: 18/35
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