Add 21/56 and 96/70, Solve 21/56 + 1 26/70 as a fraction

Add 21/56 and 96/70

1^st number: 21/56, 2^nd number: 1 26/70

21/56 + 96/70 is 489/280.

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 70 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280
Likewise, for the 2nd fraction, since 70 × 4 = 280,
96/70 = 96 × 4/70 × 4 = 384/280
Add the two like fractions:
105/280 + 384/280 = 105 + 384/280 = 489/280
So, 21/56 + 96/70 = 489/280
In mixed form: 1209/280

MathStep (Works offline)

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