Add 70/42 and 12/32, Solve 1 28/42 + 12/32 as a fraction

Add 70/42 and 12/32

1^st number: 1 28/42, 2^nd number: 12/32

70/42 + 12/32 is 49/24.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 32 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 42 × 16 = 672,
70/42 = 70 × 16/42 × 16 = 1120/672
Likewise, for the 2nd fraction, since 32 × 21 = 672,
12/32 = 12 × 21/32 × 21 = 252/672
Add the two like fractions:
1120/672 + 252/672 = 1120 + 252/672 = 1372/672
1372/672 simplified gives 49/24
So, 70/42 + 12/32 = 49/24
In mixed form: 21/24

MathStep (Works offline)

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