Add 70/84 and 75/10
1st number: 70/84, 2nd number: 7 5/10
70/84 + 75/10 is 25/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
70/84 = 70 × 5/84 × 5 = 350/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
75/10 = 75 × 42/10 × 42 = 3150/420 - Add the two like fractions:
350/420 + 3150/420 = 350 + 3150/420 = 3500/420 - 3500/420 simplified gives 25/3
- So, 70/84 + 75/10 = 25/3
In mixed form: 81/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/84+75/20 70/84+75/30 70/84+75/50 70/84+75/70