Add 90/10 and 30/40
1st number: 9 0/10, 2nd number: 30/40
90/10 + 30/40 is 39/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
90/10 = 90 × 4/10 × 4 = 360/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
30/40 = 30 × 1/40 × 1 = 30/40 - Add the two like fractions:
360/40 + 30/40 = 360 + 30/40 = 390/40 - 390/40 simplified gives 39/4
- So, 90/10 + 30/40 = 39/4
In mixed form: 93/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10+60/40 90/20+30/40 90/10+30/80 90/10+90/40 90/30+30/40 90/50+30/40 90/70+30/40