Add 18/15 and 70/7
1st number: 1 3/15, 2nd number: 10 0/7
18/15 + 70/7 is 56/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
18/15 = 18 × 7/15 × 7 = 126/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
70/7 = 70 × 15/7 × 15 = 1050/105 - Add the two like fractions:
126/105 + 1050/105 = 126 + 1050/105 = 1176/105 - 1176/105 simplified gives 56/5
- So, 18/15 + 70/7 = 56/5
In mixed form: 111/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15+70/7 18/30+70/7 18/15+70/14 54/15+70/7 18/45+70/7 18/15+70/21 90/15+70/7 18/75+70/7 18/15+70/35 18/15+70/49