Add 40/50 and 72/70
1st number: 40/50, 2nd number: 1 2/70
40/50 + 72/70 is 64/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 70 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 50 × 7 = 350,
40/50 = 40 × 7/50 × 7 = 280/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
72/70 = 72 × 5/70 × 5 = 360/350 - Add the two like fractions:
280/350 + 360/350 = 280 + 360/350 = 640/350 - 640/350 simplified gives 64/35
- So, 40/50 + 72/70 = 64/35
In mixed form: 129/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/50+72/70