evaluate the expression if a=-2 and b = 5

If , a = (-2) and b = 5
Then :-
[tex] = \frac{8 \times 5 - 6 \times ( - 5)}{13} [/tex]
[tex] = \frac{40 - ( - 30)}{13} [/tex]
[tex] = \frac{70}{13} [/tex]
[tex] = 5.384615[/tex]
[tex]∴ \: \frac{8 \times 5 - 6 \times ( - 5)}{13} = 5.384615[/tex]