Add 90/42 and 10/5
1st number: 2 6/42, 2nd number: 2 0/5
90/42 + 10/5 is 29/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
90/42 = 90 × 5/42 × 5 = 450/210 - Likewise, for the 2nd fraction, since 5 × 42 = 210,
10/5 = 10 × 42/5 × 42 = 420/210 - Add the two like fractions:
450/210 + 420/210 = 450 + 420/210 = 870/210 - 870/210 simplified gives 29/7
- So, 90/42 + 10/5 = 29/7
In mixed form: 41/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42+20/5 90/84+10/5 90/42+30/5 90/42+10/15 90/42+50/5 90/42+10/25 90/42+70/5 90/42+10/35