Add 10/70 and 45/80
10/70 + 45/80 is 79/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
10/70 = 10 × 8/70 × 8 = 80/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
45/80 = 45 × 7/80 × 7 = 315/560 - Add the two like fractions:
80/560 + 315/560 = 80 + 315/560 = 395/560 - 395/560 simplified gives 79/112
- So, 10/70 + 45/80 = 79/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/70+45/80 10/70+90/80 30/70+45/80 50/70+45/80