Add 90/80 and 8/70
1st number: 1 10/80, 2nd number: 8/70
90/80 + 8/70 is 347/280.
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,
90/80 = 90 × 7/80 × 7 = 630/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
8/70 = 8 × 8/70 × 8 = 64/560 - Add the two like fractions:
630/560 + 64/560 = 630 + 64/560 = 694/560 - 694/560 simplified gives 347/280
- So, 90/80 + 8/70 = 347/280
In mixed form: 167/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+16/70 90/80+24/70 90/80+40/70 90/80+56/70