Add 45/30 and 70/7
1st number: 1 15/30, 2nd number: 10 0/7
45/30 + 70/7 is 23/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
45/30 = 45 × 7/30 × 7 = 315/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
70/7 = 70 × 30/7 × 30 = 2100/210 - Add the two like fractions:
315/210 + 2100/210 = 315 + 2100/210 = 2415/210 - 2415/210 simplified gives 23/2
- So, 45/30 + 70/7 = 23/2
In mixed form: 111/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30+70/7 45/60+70/7 45/30+70/14 45/90+70/7 45/30+70/21 45/30+70/35 45/30+70/49