Add 42/30 and 2/45
1st number: 1 12/30, 2nd number: 2/45
42/30 + 2/45 is 13/9.
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,
2/45 = 2 × 2/45 × 2 = 4/90 - Add the two like fractions:
126/90 + 4/90 = 126 + 4/90 = 130/90 - 130/90 simplified gives 13/9
- So, 42/30 + 2/45 = 13/9
In mixed form: 14/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30+2/45 42/30+4/45 42/60+2/45 42/30+2/90 42/30+6/45 42/90+2/45 42/30+10/45 42/30+14/45