[tex] \frac{12}{13} [/tex] + [tex](- \frac{1}{13} )[/tex]
First, simplify the brackets. / Your problem should look like: [tex] \frac{12}{13} [/tex] - [tex] \frac{1}{13} [/tex]
Second, simplify. / Your problem should look like: [tex] \frac{11}{13} [/tex]
Answer as fraction: [tex] \frac{11}{13} [/tex]
Answer as decimal: 0.8462