Add 42/90 and 18/8
1st number: 42/90, 2nd number: 2 2/8
42/90 + 18/8 is 163/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
42/90 = 42 × 4/90 × 4 = 168/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
18/8 = 18 × 45/8 × 45 = 810/360 - Add the two like fractions:
168/360 + 810/360 = 168 + 810/360 = 978/360 - 978/360 simplified gives 163/60
- So, 42/90 + 18/8 = 163/60
In mixed form: 243/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90+18/8 42/90+36/8 42/90+18/16 42/90+54/8 42/90+18/24 42/90+90/8 42/90+18/40 42/90+18/56