Add 7/15 and 42/45
7/15 + 42/45 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
7/15 = 7 × 3/15 × 3 = 21/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
42/45 = 42 × 1/45 × 1 = 42/45 - Add the two like fractions:
21/45 + 42/45 = 21 + 42/45 = 63/45 - 63/45 simplified gives 7/5
- So, 7/15 + 42/45 = 7/5
In mixed form: 12/5
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