Add 56/42 and 1/90, Solve 1 14/42 + 1/90 as a fraction

Add 56/42 and 1/90

1^st number: 1 14/42, 2^nd number: 1/90

56/42 + 1/90 is 121/90.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 42 × 15 = 630,
56/42 = 56 × 15/42 × 15 = 840/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
1/90 = 1 × 7/90 × 7 = 7/630
Add the two like fractions:
840/630 + 7/630 = 840 + 7/630 = 847/630
847/630 simplified gives 121/90
So, 56/42 + 1/90 = 121/90
In mixed form: 131/90

MathStep (Works offline)

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