Add 84/90 and 60/42
1st number: 84/90, 2nd number: 1 18/42
84/90 + 60/42 is 248/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
84/90 = 84 × 7/90 × 7 = 588/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
60/42 = 60 × 15/42 × 15 = 900/630 - Add the two like fractions:
588/630 + 900/630 = 588 + 900/630 = 1488/630 - 1488/630 simplified gives 248/105
- So, 84/90 + 60/42 = 248/105
In mixed form: 238/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90+60/84