Add 50/42 and 60/9, Solve 1 8/42 + 6 6/9 as a fraction

Add 50/42 and 60/9

1^st number: 1 8/42, 2^nd number: 6 6/9

50/42 + 60/9 is 55/7.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 42 × 3 = 126,
50/42 = 50 × 3/42 × 3 = 150/126
Likewise, for the 2nd fraction, since 9 × 14 = 126,
60/9 = 60 × 14/9 × 14 = 840/126
Add the two like fractions:
150/126 + 840/126 = 150 + 840/126 = 990/126
990/126 simplified gives 55/7
So, 50/42 + 60/9 = 55/7
In mixed form: 76/7

MathStep (Works offline)

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