Add 90/72 and 8/10
1st number: 1 18/72, 2nd number: 8/10
90/72 + 8/10 is 41/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 10 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
90/72 = 90 × 5/72 × 5 = 450/360 - Likewise, for the 2nd fraction, since 10 × 36 = 360,
8/10 = 8 × 36/10 × 36 = 288/360 - Add the two like fractions:
450/360 + 288/360 = 450 + 288/360 = 738/360 - 738/360 simplified gives 41/20
- So, 90/72 + 8/10 = 41/20
In mixed form: 21/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+16/10 90/72+8/20 90/72+24/10 90/72+8/30 90/72+40/10 90/72+8/50 90/72+56/10 90/72+8/70