Add 12/30 and 90/63
1st number: 12/30, 2nd number: 1 27/63
12/30 + 90/63 is 64/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
12/30 = 12 × 21/30 × 21 = 252/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
90/63 = 90 × 10/63 × 10 = 900/630 - Add the two like fractions:
252/630 + 900/630 = 252 + 900/630 = 1152/630 - 1152/630 simplified gives 64/35
- So, 12/30 + 90/63 = 64/35
In mixed form: 129/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30+90/63 12/60+90/63 36/30+90/63 12/90+90/63 60/30+90/63 84/30+90/63