Add 90/40 and 30/14
1st number: 2 10/40, 2nd number: 2 2/14
90/40 + 30/14 is 123/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 14 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
90/40 = 90 × 7/40 × 7 = 630/280 - Likewise, for the 2nd fraction, since 14 × 20 = 280,
30/14 = 30 × 20/14 × 20 = 600/280 - Add the two like fractions:
630/280 + 600/280 = 630 + 600/280 = 1230/280 - 1230/280 simplified gives 123/28
- So, 90/40 + 30/14 = 123/28
In mixed form: 411/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+60/14 90/80+30/14 90/40+30/28 90/40+90/14 90/40+30/42 90/40+30/70 90/40+30/98