Add 18/20 and 8/70
18/20 + 8/70 is 71/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
18/20 = 18 × 7/20 × 7 = 126/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
8/70 = 8 × 2/70 × 2 = 16/140 - Add the two like fractions:
126/140 + 16/140 = 126 + 16/140 = 142/140 - 142/140 simplified gives 71/70
- So, 18/20 + 8/70 = 71/70
In mixed form: 11/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20+8/70 18/20+16/70 18/40+8/70 54/20+8/70 18/20+24/70 18/60+8/70 90/20+8/70 18/20+40/70 18/20+56/70