Add 24/30 and 70/90
24/30 + 70/90 is 71/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
24/30 = 24 × 3/30 × 3 = 72/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
70/90 = 70 × 1/90 × 1 = 70/90 - Add the two like fractions:
72/90 + 70/90 = 72 + 70/90 = 142/90 - 142/90 simplified gives 71/45
- So, 24/30 + 70/90 = 71/45
In mixed form: 126/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/30+70/90 24/60+70/90 72/30+70/90 24/90+70/90