Add 42/30 and 21/45
1st number: 1 12/30, 2nd number: 21/45
42/30 + 21/45 is 28/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
42/30 = 42 × 3/30 × 3 = 126/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Add the two like fractions:
126/90 + 42/90 = 126 + 42/90 = 168/90 - 168/90 simplified gives 28/15
- So, 42/30 + 21/45 = 28/15
In mixed form: 113/15
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