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130-{15+[1570•(207-1008:8)-(19+304•6:8)]}=

Răspuns :

130-{15+[1570•(207-1008:8)-(19+304•6:8)]}=
= 130-{15+[1 570×(207-126)- (19+228)]} =
= 130-{15+[1 570×(81 - 247)]} =
= 130 - ( 15 + 1 570× -166) =
= 130 - [15+ (-260 620)] =
= 130 - (- 260 605) =
= 130 + 260 605 =
= 260 735