Add 4/40 and 8/70
4/40 + 8/70 is 3/14.
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,
8/70 = 8 × 4/70 × 4 = 32/280 - Add the two like fractions:
28/280 + 32/280 = 28 + 32/280 = 60/280 - 60/280 simplified gives 3/14
- So, 4/40 + 8/70 = 3/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40+8/70 4/40+16/70 4/80+8/70 12/40+8/70 4/40+24/70 20/40+8/70 4/40+40/70 28/40+8/70 4/40+56/70