Add 98/80 and 4/40, Solve 1 18/80 + 4/40 as a fraction

Add 98/80 and 4/40

1^st number: 1 18/80, 2^nd number: 4/40

98/80 + 4/40 is 53/40.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 40 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 80 × 1 = 80,
98/80 = 98 × 1/80 × 1 = 98/80
Likewise, for the 2nd fraction, since 40 × 2 = 80,
4/40 = 4 × 2/40 × 2 = 8/80
Add the two like fractions:
98/80 + 8/80 = 98 + 8/80 = 106/80
106/80 simplified gives 53/40
So, 98/80 + 4/40 = 53/40
In mixed form: 113/40

MathStep (Works offline)

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