Add 90/30 and 70/63
1st number: 3 0/30, 2nd number: 1 7/63
90/30 + 70/63 is 37/9.
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,
90/30 = 90 × 21/30 × 21 = 1890/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
70/63 = 70 × 10/63 × 10 = 700/630 - Add the two like fractions:
1890/630 + 700/630 = 1890 + 700/630 = 2590/630 - 2590/630 simplified gives 37/9
- So, 90/30 + 70/63 = 37/9
In mixed form: 41/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/60+70/63