Question

write (-1\frac{7}{20}) as a decimal number.

Explanation:

Step1: Convert fraction to decimal

First, convert the fractional part \(\frac{7}{20}\) to a decimal. We know that to convert a fraction to a decimal, we divide the numerator by the denominator. So, \(7\div20 = 0.35\).

Step2: Combine with the integer part

The mixed number is \(-1\frac{7}{20}\), which is the same as \(-(1 + \frac{7}{20})\). We already found that \(\frac{7}{20}=0.35\), so adding the integer part \(1\) to this decimal gives \(1 + 0.35=1.35\). Then, applying the negative sign, we get \(-1.35\).

Answer:

\(-1.35\)