Add 20/2 and 90/42
1st number: 10 0/2, 2nd number: 2 6/42
20/2 + 90/42 is 85/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
20/2 = 20 × 21/2 × 21 = 420/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
90/42 = 90 × 1/42 × 1 = 90/42 - Add the two like fractions:
420/42 + 90/42 = 420 + 90/42 = 510/42 - 510/42 simplified gives 85/7
- So, 20/2 + 90/42 = 85/7
In mixed form: 121/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/2+90/42 20/4+90/42 20/2+90/84 60/2+90/42 20/6+90/42 20/10+90/42 20/14+90/42