Add 40/70 and 72/56
1st number: 40/70, 2nd number: 1 16/56
40/70 + 72/56 is 13/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
40/70 = 40 × 4/70 × 4 = 160/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
72/56 = 72 × 5/56 × 5 = 360/280 - Add the two like fractions:
160/280 + 360/280 = 160 + 360/280 = 520/280 - 520/280 simplified gives 13/7
- So, 40/70 + 72/56 = 13/7
In mixed form: 16/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70+72/56