Add 45/35 and 15/12, Solve 1 10/35 + 1 3/12 as a fraction

Add 45/35 and 15/12

1^st number: 1 10/35, 2^nd number: 1 3/12

45/35 + 15/12 is 71/28.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 12 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 35 × 12 = 420,
45/35 = 45 × 12/35 × 12 = 540/420
Likewise, for the 2nd fraction, since 12 × 35 = 420,
15/12 = 15 × 35/12 × 35 = 525/420
Add the two like fractions:
540/420 + 525/420 = 540 + 525/420 = 1065/420
1065/420 simplified gives 71/28
So, 45/35 + 15/12 = 71/28
In mixed form: 215/28

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad