Add 24/84 and 90/40
1st number: 24/84, 2nd number: 2 10/40
24/84 + 90/40 is 71/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
24/84 = 24 × 10/84 × 10 = 240/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
90/40 = 90 × 21/40 × 21 = 1890/840 - Add the two like fractions:
240/840 + 1890/840 = 240 + 1890/840 = 2130/840 - 2130/840 simplified gives 71/28
- So, 24/84 + 90/40 = 71/28
In mixed form: 215/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/84+90/40 24/84+90/80 72/84+90/40