Add 70/40 and 7/84
1st number: 1 30/40, 2nd number: 7/84
70/40 + 7/84 is 11/6.
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,
70/40 = 70 × 21/40 × 21 = 1470/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
7/84 = 7 × 10/84 × 10 = 70/840 - Add the two like fractions:
1470/840 + 70/840 = 1470 + 70/840 = 1540/840 - 1540/840 simplified gives 11/6
- So, 70/40 + 7/84 = 11/6
In mixed form: 15/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40+14/84 70/80+7/84 70/40+21/84 70/40+35/84 70/40+49/84