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[-9-(-3+5)+(7-6+6)-(-10+12)]×(-5)-7×(-10)=....... Ajutor dau coroana.

Răspuns :

[-9-(-3+5)+(7-6+6)-(-10+12)]×(-5)-7×(-10)=
= (-9-2+7-2)×(-5)+70
= (-6)×(-5)+70
= 30+70
= 100
-9-2+7-2)x(-5)+70=
-6 x(-5)+70=
30+70=100