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[86:2+3×(6+3)]:7-(8-3)×(31-29)=​

Răspuns :

[86:2+3×(6+3)]:7-(8-3)×(31-29)=

(86:2+3×9):7-5×2=

(43+27):7-5x2=

70:7-5x2=

10-10=

=0