Add 42/35 and 12/49, Solve 1 7/35 + 12/49 as a fraction

Add 42/35 and 12/49

1^st number: 1 7/35, 2^nd number: 12/49

42/35 + 12/49 is 354/245.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 49 is 245

Next, find the equivalent fraction of both fractional numbers with denominator 245
For the 1st fraction, since 35 × 7 = 245,
42/35 = 42 × 7/35 × 7 = 294/245
Likewise, for the 2nd fraction, since 49 × 5 = 245,
12/49 = 12 × 5/49 × 5 = 60/245
Add the two like fractions:
294/245 + 60/245 = 294 + 60/245 = 354/245
So, 42/35 + 12/49 = 354/245
In mixed form: 1109/245

MathStep (Works offline)

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