Add 4/40 and 10/70
4/40 + 10/70 is 17/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
4/40 = 4 × 7/40 × 7 = 28/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
10/70 = 10 × 4/70 × 4 = 40/280 - Add the two like fractions:
28/280 + 40/280 = 28 + 40/280 = 68/280 - 68/280 simplified gives 17/70
- So, 4/40 + 10/70 = 17/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40+10/70 4/40+20/70 4/80+10/70 12/40+10/70 4/40+30/70 20/40+10/70 4/40+50/70 28/40+10/70