1/18-9/20 — step-by-step solution

Let's calculate:

\frac{1}{18} - \frac{9}{20}

\frac{10 - 9 \times 9}{18 \times 10}

ℹ

-9 \times 9

-81

‖

18 \times 10

180

\frac{10 - 81}{180}

ℹ

10 - 81

-71

▶Result:

- \frac{71}{180}

The approximate value of:

- \frac{71}{180}

is:

▷

\approx -0.3944