Add 7/70 and 8/20
7/70 + 8/20 is 1/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
7/70 = 7 × 2/70 × 2 = 14/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
8/20 = 8 × 7/20 × 7 = 56/140 - Add the two like fractions:
14/140 + 56/140 = 14 + 56/140 = 70/140 - 70/140 simplified gives 1/2
- So, 7/70 + 8/20 = 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/70+8/20 7/70+16/20 7/70+8/40 21/70+8/20 7/70+24/20 7/70+8/60 35/70+8/20 7/70+40/20 49/70+8/20 7/70+56/20