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[tex]86 \div 2 \times 9 - 7 \times (43 - 12) = [/tex]


Răspuns :

   
[tex]\displaystyle\\ 86 : 2 \times 9 - 7 \times (43 - 12) = \\ =43 \times 9 - 7 \times 31= \\ =387-217 = \boxed{\bf170}[/tex]