Add 70/12 and 75/45
1st number: 5 10/12, 2nd number: 1 30/45
70/12 + 75/45 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
70/12 = 70 × 15/12 × 15 = 1050/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
75/45 = 75 × 4/45 × 4 = 300/180 - Add the two like fractions:
1050/180 + 300/180 = 1050 + 300/180 = 1350/180 - 1350/180 simplified gives 15/2
- So, 70/12 + 75/45 = 15/2
In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/24+75/45 70/12+75/90 70/36+75/45 70/60+75/45 70/84+75/45