Question

what is the answer
1/10+1/-20=​?

Answer 1

Step-by-step explanation:

$\frac{1}{10} + ( \frac{1}{ - 20} ) \\ \\ \frac{1}{10} - \frac{1}{20} \\ \\ lcm \: of \: 10 \: and \: 20 \: is \: 20 \\ \\ \frac{1 \times 2}{10 \times 2} - \frac{1}{20} \\ \\ \frac{2}{20} - \frac{1}{20} \\ \\ = \frac{1}{20}$

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