Add 70/56 and 90/15
1st number: 1 14/56, 2nd number: 6 0/15
70/56 + 90/15 is 29/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 15 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
70/56 = 70 × 15/56 × 15 = 1050/840 - Likewise, for the 2nd fraction, since 15 × 56 = 840,
90/15 = 90 × 56/15 × 56 = 5040/840 - Add the two like fractions:
1050/840 + 5040/840 = 1050 + 5040/840 = 6090/840 - 6090/840 simplified gives 29/4
- So, 70/56 + 90/15 = 29/4
In mixed form: 71/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/56+90/30 70/56+90/45 70/56+90/75