Add 42/40 and 8/30
1st number: 1 2/40, 2nd number: 8/30
42/40 + 8/30 is 79/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
42/40 = 42 × 3/40 × 3 = 126/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
8/30 = 8 × 4/30 × 4 = 32/120 - Add the two like fractions:
126/120 + 32/120 = 126 + 32/120 = 158/120 - 158/120 simplified gives 79/60
- So, 42/40 + 8/30 = 79/60
In mixed form: 119/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40+8/30 42/40+16/30 42/80+8/30 42/40+8/60 42/40+24/30 42/40+8/90 42/40+40/30 42/40+56/30