Add 12/70 and 25/42
12/70 + 25/42 is 23/30.
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,
12/70 = 12 × 3/70 × 3 = 36/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
25/42 = 25 × 5/42 × 5 = 125/210 - Add the two like fractions:
36/210 + 125/210 = 36 + 125/210 = 161/210 - 161/210 simplified gives 23/30
- So, 12/70 + 25/42 = 23/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/70+25/42 12/70+50/42 12/70+25/84 36/70+25/42 12/70+75/42 60/70+25/42 84/70+25/42