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14-{-[-6]+(+30)}+2
14-{+6+30}+2
14-{+36}+2
14-36+2
-18 + 2
-16
⇒ - { - [(-2)x3 ] + (-5)(-6) }
- { - [ -6 ] + 30 }
- { 6 + 30 }
- { 36 } = -36.
⇒ -(-14) = 14
→ 14 - 36 + 2
-36 + 16
20.
Sabes que:
∴ (-).(-) = +
∴ (+).(+) = +
∴ (+).(-) = -