Add 18/84 and 36/10, Solve 18/84 + 3 6/10 as a fraction

Add 18/84 and 36/10

1^st number: 18/84, 2^nd number: 3 6/10

18/84 + 36/10 is 267/70.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 84 × 5 = 420,
18/84 = 18 × 5/84 × 5 = 90/420
Likewise, for the 2nd fraction, since 10 × 42 = 420,
36/10 = 36 × 42/10 × 42 = 1512/420
Add the two like fractions:
90/420 + 1512/420 = 90 + 1512/420 = 1602/420
1602/420 simplified gives 267/70
So, 18/84 + 36/10 = 267/70
In mixed form: 357/70

MathStep (Works offline)

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