Answers

Add 72/42 and 56/8

1^st number: 1 30/42, 2^nd number: 7 0/8

72/42 + 56/8 is 61/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 8 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 42 × 4 = 168,
   72/42 = 72 × 4/42 × 4 = 288/168
3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
   56/8 = 56 × 21/8 × 21 = 1176/168
4. Add the two like fractions:
   288/168 + 1176/168 = 288 + 1176/168 = 1464/168
5. 1464/168 simplified gives 61/7
6. So, 72/42 + 56/8 = 61/7
   In mixed form: 85/7

MathStep (Works offline)

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

Related: ⁷²/₈₄+⁵⁶/₈ ⁷²/₄₂+⁵⁶/₁₆ ⁷²/₄₂+⁵⁶/₂₄ ⁷²/₄₂+⁵⁶/₄₀

Add Fractions Calculator