Answers

Add 7/84 and 42/10

1^st number: 7/84, 2^nd number: 4 2/10

7/84 + 42/10 is 257/60.

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,
   7/84 = 7 × 5/84 × 5 = 35/420
3. Likewise, for the 2nd fraction, since 10 × 42 = 420,
   42/10 = 42 × 42/10 × 42 = 1764/420
4. Add the two like fractions:
   35/420 + 1764/420 = 35 + 1764/420 = 1799/420
5. 1799/420 simplified gives 257/60
6. So, 7/84 + 42/10 = 257/60
   In mixed form: 417/60

MathStep (Works offline)

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

Related: ¹⁴/₈₄+⁴²/₁₀ ⁷/₈₄+⁸⁴/₁₀ ⁷/₈₄+⁴²/₂₀ ²¹/₈₄+⁴²/₁₀ ⁷/₈₄+⁴²/₃₀ ³⁵/₈₄+⁴²/₁₀ ⁷/₈₄+⁴²/₅₀ ⁴⁹/₈₄+⁴²/₁₀ ⁷/₈₄+⁴²/₇₀

Add Fractions Calculator