Answers

Add 42/63 and 21/10

1^st number: 42/63, 2^nd number: 2 1/10

42/63 + 21/10 is 83/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 10 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   42/63 = 42 × 10/63 × 10 = 420/630
3. Likewise, for the 2nd fraction, since 10 × 63 = 630,
   21/10 = 21 × 63/10 × 63 = 1323/630
4. Add the two like fractions:
   420/630 + 1323/630 = 420 + 1323/630 = 1743/630
5. 1743/630 simplified gives 83/30
6. So, 42/63 + 21/10 = 83/30
   In mixed form: 223/30

MathStep (Works offline)

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

Related: ⁸⁴/₆₃+²¹/₁₀ ⁴²/₆₃+⁴²/₁₀ ⁴²/₆₃+²¹/₂₀ ⁴²/₆₃+⁶³/₁₀ ⁴²/₆₃+²¹/₃₀ ⁴²/₆₃+²¹/₅₀ ⁴²/₆₃+²¹/₇₀

Add Fractions Calculator