Add 98/42 and 30/80, Solve 2 14/42 + 30/80 as a fraction

Add 98/42 and 30/80

1^st number: 2 14/42, 2^nd number: 30/80

98/42 + 30/80 is 65/24.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 42 × 40 = 1680,
98/42 = 98 × 40/42 × 40 = 3920/1680
Likewise, for the 2nd fraction, since 80 × 21 = 1680,
30/80 = 30 × 21/80 × 21 = 630/1680
Add the two like fractions:
3920/1680 + 630/1680 = 3920 + 630/1680 = 4550/1680
4550/1680 simplified gives 65/24
So, 98/42 + 30/80 = 65/24
In mixed form: 217/24

MathStep (Works offline)

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