-4+2 [-3 x (5-7) -  9]

Sagot :

4+2 [-3 x (5-7) -  9] =
-4 +2 ( 6-9) = -4 -6 = -10
-4+2 [-3 x (5-7) -  9] = -4+2 [-3 x (-2) -9 ]
                                = -4+2 [6-9 ]         
                                = -4+2 x (-3)
                                = -4+(-6)
                                = 24