Add 4/20 and 70/45
1st number: 4/20, 2nd number: 1 25/45
4/20 + 70/45 is 79/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
4/20 = 4 × 9/20 × 9 = 36/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
70/45 = 70 × 4/45 × 4 = 280/180 - Add the two like fractions:
36/180 + 280/180 = 36 + 280/180 = 316/180 - 316/180 simplified gives 79/45
- So, 4/20 + 70/45 = 79/45
In mixed form: 134/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/20+70/45 4/40+70/45 4/20+70/90 12/20+70/45 4/60+70/45 28/20+70/45