Add 84/18 and 10/40
1st number: 4 12/18, 2nd number: 10/40
84/18 + 10/40 is 59/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
84/18 = 84 × 20/18 × 20 = 1680/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
10/40 = 10 × 9/40 × 9 = 90/360 - Add the two like fractions:
1680/360 + 90/360 = 1680 + 90/360 = 1770/360 - 1770/360 simplified gives 59/12
- So, 84/18 + 10/40 = 59/12
In mixed form: 411/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+20/40 84/36+10/40 84/18+10/80 84/18+30/40 84/54+10/40 84/18+50/40 84/90+10/40 84/18+70/40