Answers

Add 42/84 and 45/10

1^st number: 42/84, 2^nd number: 4 5/10

42/84 + 45/10 is 5/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 10 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   42/84 = 42 × 5/84 × 5 = 210/420
3. Likewise, for the 2nd fraction, since 10 × 42 = 420,
   45/10 = 45 × 42/10 × 42 = 1890/420
4. Add the two like fractions:
   210/420 + 1890/420 = 210 + 1890/420 = 2100/420
5. 2100/420 simplified gives 5/1
6. So, 42/84 + 45/10 = 5/1

MathStep (Works offline)

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

Related: ⁴²/₈₄+⁹⁰/₁₀ ⁴²/₈₄+⁴⁵/₂₀ ⁴²/₈₄+⁴⁵/₃₀ ⁴²/₈₄+⁴⁵/₅₀ ⁴²/₈₄+⁴⁵/₇₀

Add Fractions Calculator