Add 90/80 and 70/4
1st number: 1 10/80, 2nd number: 17 2/4
90/80 + 70/4 is 149/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 4 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
90/80 = 90 × 1/80 × 1 = 90/80 - Likewise, for the 2nd fraction, since 4 × 20 = 80,
70/4 = 70 × 20/4 × 20 = 1400/80 - Add the two like fractions:
90/80 + 1400/80 = 90 + 1400/80 = 1490/80 - 1490/80 simplified gives 149/8
- So, 90/80 + 70/4 = 149/8
In mixed form: 185/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+70/8 90/80+70/12 90/80+70/20 90/80+70/28