Add 30/70 and 36/40
30/70 + 36/40 is 93/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
30/70 = 30 × 4/70 × 4 = 120/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
36/40 = 36 × 7/40 × 7 = 252/280 - Add the two like fractions:
120/280 + 252/280 = 120 + 252/280 = 372/280 - 372/280 simplified gives 93/70
- So, 30/70 + 36/40 = 93/70
In mixed form: 123/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70+36/40 30/70+72/40 30/70+36/80 90/70+36/40