4 * ( 6 - 2).............( - 6)
--------------- - ------------------ =
- 8 .............................2
primero resolvemos el parentesis
4 * ( 4)....................( - 6)
--------------- - ------------------ =
- 8 .............................2
resolvemos la multiplicación
16...........................( - 6)
--------------- - ------------------ =
- 8 .............................2
simplificamos
.....2......................( - 3)
--------------- - ------------------ =
- 1 ............................1
- 2 - ( - 3) = - 2 + 3 = 1
espero que te sirva, salu2!!!!