3/7-3/14

Let's calculate: $\frac{3}{7}-\frac{3}{14}$

ⓘ To add fractions, put them over the same denominator, then add the numerators. We choose $14$, the least common multiple of $7$ and $14$. Multiplying the numerator and the denominator by the same number does not change the fraction: $\frac{3}{7}-\frac{3}{14}$ = $\frac{3\times 2}{7\times 2}-\frac{3}{14}$ = $\frac{3\times 2-3}{14}$

$\frac{3\times 2-3}{14}$

ⓘ Multiplications are done before additions and subtractions: $3\times 2$ = $6$

$\frac{6-3}{14}$

ⓘ The numerator and the denominator are computed before the division: $6-3$ = $3$

▶Result:   $\frac{3}{14}$

The numeric value of: $\frac{3}{14}$ is:

▷ $\approx 0.2143$