Add 42/4 and 30/40
1st number: 10 2/4, 2nd number: 30/40
42/4 + 30/40 is 45/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 4 × 10 = 40,
42/4 = 42 × 10/4 × 10 = 420/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
30/40 = 30 × 1/40 × 1 = 30/40 - Add the two like fractions:
420/40 + 30/40 = 420 + 30/40 = 450/40 - 450/40 simplified gives 45/4
- So, 42/4 + 30/40 = 45/4
In mixed form: 111/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4+30/40 42/4+60/40 42/8+30/40 42/4+30/80 42/4+90/40 42/12+30/40 42/20+30/40 42/28+30/40