Add 42/10 and 90/25
1st number: 4 2/10, 2nd number: 3 15/25
42/10 + 90/25 is 39/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 25 is 50
Next, find the equivalent fraction of both fractional numbers with denominator 50 - For the 1st fraction, since 10 × 5 = 50,
42/10 = 42 × 5/10 × 5 = 210/50 - Likewise, for the 2nd fraction, since 25 × 2 = 50,
90/25 = 90 × 2/25 × 2 = 180/50 - Add the two like fractions:
210/50 + 180/50 = 210 + 180/50 = 390/50 - 390/50 simplified gives 39/5
- So, 42/10 + 90/25 = 39/5
In mixed form: 74/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10+90/25 42/20+90/25 42/10+90/50 42/30+90/25 42/10+90/75 42/50+90/25 42/70+90/25