Add 42/70 and 1/18
42/70 + 1/18 is 59/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
42/70 = 42 × 9/70 × 9 = 378/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
1/18 = 1 × 35/18 × 35 = 35/630 - Add the two like fractions:
378/630 + 35/630 = 378 + 35/630 = 413/630 - 413/630 simplified gives 59/90
- So, 42/70 + 1/18 = 59/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70+1/18 42/70+2/18 42/70+1/36 42/70+3/18 42/70+1/54 42/70+5/18 42/70+1/90 42/70+7/18