Add 54/10 and 70/90
1st number: 5 4/10, 2nd number: 70/90
54/10 + 70/90 is 278/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
54/10 = 54 × 9/10 × 9 = 486/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
70/90 = 70 × 1/90 × 1 = 70/90 - Add the two like fractions:
486/90 + 70/90 = 486 + 70/90 = 556/90 - 556/90 simplified gives 278/45
- So, 54/10 + 70/90 = 278/45
In mixed form: 68/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/20+70/90 54/30+70/90 54/50+70/90 54/70+70/90