Add 90/42 and 8/45
1st number: 2 6/42, 2nd number: 8/45
90/42 + 8/45 is 731/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
90/42 = 90 × 15/42 × 15 = 1350/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
8/45 = 8 × 14/45 × 14 = 112/630 - Add the two like fractions:
1350/630 + 112/630 = 1350 + 112/630 = 1462/630 - 1462/630 simplified gives 731/315
- So, 90/42 + 8/45 = 731/315
In mixed form: 2101/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42+16/45 90/84+8/45 90/42+8/90 90/42+24/45 90/42+40/45 90/42+56/45