7/20-1/2 — step-by-step solution

Let's evaluate:

\frac{7}{20} - \frac{1}{2}

\frac{7 - 1 \times 10}{20}

ℹ

-1 \times 10

-10

\frac{7 - 10}{20}

ℹ

7 - 10

-3

▶Result:

- \frac{3}{20}

The approximate value of:

- \frac{3}{20}

equals:

▷

-0.15