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12+4inmultit(57-3inmultit(4+8))=

Răspuns :

[tex]12+4*(57-3*(4+8))=12+4*(57-3*12)= \\ =12+4*(57-36)=12+4*21=12+84=96[/tex]
12 plus 4 x (57-3x12)
12plus 4x (57-36)
12plus 4x 21
12plus 84egal
egal 96