Add 84/80 and 9/70
1st number: 1 4/80, 2nd number: 9/70
84/80 + 9/70 is 33/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
84/80 = 84 × 7/80 × 7 = 588/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
9/70 = 9 × 8/70 × 8 = 72/560 - Add the two like fractions:
588/560 + 72/560 = 588 + 72/560 = 660/560 - 660/560 simplified gives 33/28
- So, 84/80 + 9/70 = 33/28
In mixed form: 15/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80+18/70 84/80+27/70 84/80+45/70 84/80+63/70