. 15. Determine whether the following statements is true or false: Sumo -2 + (-3) = -5 and (2) (3) - = 6 است patamad akowho eno prigode allows

.
15. Determine whether the following statements
is true
or false:
Sumo
-2 + (-3) = -5 and (2) (3) -
= 6
است
patamad akowho eno
prigode allows