Question

80-[+45-{(9-8-4)+(+7-2)}]

Answer 1

Respuesta:

$\implies 53$

Explicación paso a paso:

$80-[+45-9\{(9-8-4)+(+7-2)\}]\\\\\\\\\implies 80-[+45-9\{(9-8-4)+(+5)\}]\\\\\\\implies 80-[+45-9\{(9-12)+5)\}]\\\\\\\implies 80-[+45-9\{(-3)+5)\}]\\\\\\\implies 80-[+45-9\{-3+5\}]\\\\\\\implies 80-[+45-9\{+2\}]\\\\\\\implies 80-[+45-18]\\\\\\\implies 80-[+27]\\\\\\\implies 80-27\\\\\\\implies 53$