Question

add the following -13/8+1/-18 only genius can answer it​

Answer 1

-13/8+1/-18
=-13/8+(-1)/18
=-13/8-1/18
=(-117-4)/72
=-121/72

Answer 2

Answer:

$\frac{ - 13}{8} + ( \frac{ 1}{ - 18} ) \\ = \frac{ - 13}{8} - \frac{1}{18} \\ = \frac{ - 13 \times 9}{8 \times 9} - \frac{1 \times 4}{18 \times 4} \\ = \frac{ - 117}{72} - \frac{4}{72} \\ = \frac{ - 117 - 4}{72} \\ = \frac{121}{72}$