Add 90/50 and 98/70
1st number: 1 40/50, 2nd number: 1 28/70
90/50 + 98/70 is 16/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 70 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 50 × 7 = 350,
90/50 = 90 × 7/50 × 7 = 630/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
98/70 = 98 × 5/70 × 5 = 490/350 - Add the two like fractions:
630/350 + 490/350 = 630 + 490/350 = 1120/350 - 1120/350 simplified gives 16/5
- So, 90/50 + 98/70 = 16/5
In mixed form: 31/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: