Add 45/70 and 56/42
1st number: 45/70, 2nd number: 1 14/42
45/70 + 56/42 is 83/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
45/70 = 45 × 3/70 × 3 = 135/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
56/42 = 56 × 5/42 × 5 = 280/210 - Add the two like fractions:
135/210 + 280/210 = 135 + 280/210 = 415/210 - 415/210 simplified gives 83/42
- So, 45/70 + 56/42 = 83/42
In mixed form: 141/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+56/42 45/70+56/84