Add 10/8 and 90/30
1st number: 1 2/8, 2nd number: 3 0/30
10/8 + 90/30 is 17/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
10/8 = 10 × 15/8 × 15 = 150/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
90/30 = 90 × 4/30 × 4 = 360/120 - Add the two like fractions:
150/120 + 360/120 = 150 + 360/120 = 510/120 - 510/120 simplified gives 17/4
- So, 10/8 + 90/30 = 17/4
In mixed form: 41/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/8+90/30 10/16+90/30 10/8+90/60 30/8+90/30 10/24+90/30 50/8+90/30 10/40+90/30 70/8+90/30 10/56+90/30