Add 42/30 and 1/8
1st number: 1 12/30, 2nd number: 1/8
42/30 + 1/8 is 61/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
42/30 = 42 × 4/30 × 4 = 168/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
1/8 = 1 × 15/8 × 15 = 15/120 - Add the two like fractions:
168/120 + 15/120 = 168 + 15/120 = 183/120 - 183/120 simplified gives 61/40
- So, 42/30 + 1/8 = 61/40
In mixed form: 121/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30+1/8 42/30+2/8 42/60+1/8 42/30+1/16 42/30+3/8 42/90+1/8 42/30+1/24 42/30+5/8 42/30+1/40 42/30+7/8 42/30+1/56