Add 7/70 and 40/42
7/70 + 40/42 is 221/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
7/70 = 7 × 3/70 × 3 = 21/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
40/42 = 40 × 5/42 × 5 = 200/210 - Add the two like fractions:
21/210 + 200/210 = 21 + 200/210 = 221/210 - So, 7/70 + 40/42 = 221/210
In mixed form: 111/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/70+40/42 7/70+80/42 7/70+40/84 21/70+40/42 35/70+40/42 49/70+40/42