Add 42/30 and 45/9
1st number: 1 12/30, 2nd number: 5 0/9
42/30 + 45/9 is 32/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
42/30 = 42 × 3/30 × 3 = 126/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
45/9 = 45 × 10/9 × 10 = 450/90 - Add the two like fractions:
126/90 + 450/90 = 126 + 450/90 = 576/90 - 576/90 simplified gives 32/5
- So, 42/30 + 45/9 = 32/5
In mixed form: 62/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30+45/9 42/30+90/9 42/60+45/9 42/30+45/18 42/90+45/9 42/30+45/27 42/30+45/63