Add 70/45 and 6/42, Solve 1 25/45 + 6/42 as a fraction

Add 70/45 and 6/42

1^st number: 1 25/45, 2^nd number: 6/42

70/45 + 6/42 is 107/63.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 45 × 14 = 630,
70/45 = 70 × 14/45 × 14 = 980/630
Likewise, for the 2nd fraction, since 42 × 15 = 630,
6/42 = 6 × 15/42 × 15 = 90/630
Add the two like fractions:
980/630 + 90/630 = 980 + 90/630 = 1070/630
1070/630 simplified gives 107/63
So, 70/45 + 6/42 = 107/63
In mixed form: 144/63

MathStep (Works offline)

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