To solve the expression \(-\frac{1}{4} + -\frac{3}{5}\), we need to perform basic arithmetic with fractions. Here’s a step-by-step process:
1. **Find a common denominator**:
The denominators are 4 and 5, so the least common multiple of 4 and 5 is 20.
2. **Convert each fraction to have the common denominator**:
\[
-\frac{1}{4} = -\frac{1 \times 5}{4 \times 5} = -\frac{5}{20}
\]
\[
-\frac{3}{5} = -\frac{3 \times 4}{5 \times 4} = -\frac{12}{20}
\]
3. **Add the fractions**:
\[
-\frac{5}{20} + -\frac{12}{20} = -\frac{5 + 12}{20} = -\frac{17}{20}
\]
Therefore, \(-\frac{1}{4} + -\frac{3}{5} = -\frac{17}{20}\).
The correct answer is:
B. -17/20
- 1/4 + - 3/5 =
A. - 4/9
B. - 17/20
C. 1/10
D. 17/20
1 answer