9/20-12/17 — step-by-step solution

Let's calculate:

\frac{9}{20} - \frac{12}{17}

\frac{9 \times 17 - 12 \times 20}{20 \times 17}

ℹ

9 \times 17

153

‖

-12 \times 20

-240

‖

20 \times 17

340

\frac{153 - 240}{340}

ℹ

153 - 240

-87

▶Result:

- \frac{87}{340}

The numeric value of:

- \frac{87}{340}

is:

▷

\approx -0.2559