Add 35/70 and 30/40
35/70 + 30/40 is 5/4.
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,
35/70 = 35 × 4/70 × 4 = 140/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
30/40 = 30 × 7/40 × 7 = 210/280 - Add the two like fractions:
140/280 + 210/280 = 140 + 210/280 = 350/280 - 350/280 simplified gives 5/4
- So, 35/70 + 30/40 = 5/4
In mixed form: 11/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 35/70+60/40 35/70+30/80 35/70+90/40