Add 4/90 and 8/70
4/90 + 8/70 is 10/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
4/90 = 4 × 7/90 × 7 = 28/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
8/70 = 8 × 9/70 × 9 = 72/630 - Add the two like fractions:
28/630 + 72/630 = 28 + 72/630 = 100/630 - 100/630 simplified gives 10/63
- So, 4/90 + 8/70 = 10/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/90+8/70 4/90+16/70 12/90+8/70 4/90+24/70 20/90+8/70 4/90+40/70 28/90+8/70 4/90+56/70