Add 9/40 and 70/84
9/40 + 70/84 is 127/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
9/40 = 9 × 21/40 × 21 = 189/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
70/84 = 70 × 10/84 × 10 = 700/840 - Add the two like fractions:
189/840 + 700/840 = 189 + 700/840 = 889/840 - 889/840 simplified gives 127/120
- So, 9/40 + 70/84 = 127/120
In mixed form: 17/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40+70/84 9/80+70/84 27/40+70/84 45/40+70/84 63/40+70/84