Answers

Subtract 10/98 from 21/70

21/70 - 10/98 is 97/490.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 98 is 490
   
   Next, find the equivalent fraction of both fractional numbers with denominator 490
2. For the 1st fraction, since 70 × 7 = 490,
   21/70 = 21 × 7/70 × 7 = 147/490
3. Likewise, for the 2nd fraction, since 98 × 5 = 490,
   10/98 = 10 × 5/98 × 5 = 50/490
4. Subtract the two like fractions:
   147/490 - 50/490 = 147 - 50/490 = 97/490

MathStep (Works offline)

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

Related: ⁴²/₇₀-¹⁰/₉₈ ²¹/₇₀-²⁰/₉₈ ⁶³/₇₀-¹⁰/₉₈ ²¹/₇₀-³⁰/₉₈ ²¹/₇₀-⁵⁰/₉₈ ²¹/₇₀-⁷⁰/₉₈

Subtract Fractions Calculator