Answers

Add 7/70 and 90/80

1^st number: 7/70, 2^nd number: 1 10/80

7/70 + 90/80 is 49/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 70 × 8 = 560,
   7/70 = 7 × 8/70 × 8 = 56/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   90/80 = 90 × 7/80 × 7 = 630/560
4. Add the two like fractions:
   56/560 + 630/560 = 56 + 630/560 = 686/560
5. 686/560 simplified gives 49/40
6. So, 7/70 + 90/80 = 49/40
   In mixed form: 19/40

MathStep (Works offline)

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

Related: ¹⁴/₇₀+⁹⁰/₈₀ ²¹/₇₀+⁹⁰/₈₀ ³⁵/₇₀+⁹⁰/₈₀ ⁴⁹/₇₀+⁹⁰/₈₀

Add Fractions Calculator