Answers

Add 49/70 and 7/90

49/70 + 7/90 is 7/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 70 × 9 = 630,
   49/70 = 49 × 9/70 × 9 = 441/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   7/90 = 7 × 7/90 × 7 = 49/630
4. Add the two like fractions:
   441/630 + 49/630 = 441 + 49/630 = 490/630
5. 490/630 simplified gives 7/9
6. So, 49/70 + 7/90 = 7/9

MathStep (Works offline)

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

Related: ⁹⁸/₇₀+⁷/₉₀ ⁴⁹/₇₀+¹⁴/₉₀ ⁴⁹/₇₀+²¹/₉₀ ⁴⁹/₇₀+³⁵/₉₀ ⁴⁹/₇₀+⁴⁹/₉₀

Add Fractions Calculator