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12-3×11×[10-7×(13-2×6)=

Răspuns :

12-3x11x[10-7x(13-2x6)]=

12-3x11x[10-7x(13-12)]=

12-3x11x(10-7x1)=

12-3×11×(10-7)=

11-3×11×3=

11-33×3=

11-99= - 88

12 - 3 × 11 × [ 10 - 7 × ( 13 - 2 × 6 ) ] =

12 - 33 × [ 10 - 7 × ( 13 - 12 ) ] =

12 - 33 × ( 10 - 7 × 1 ) =

12 - 33 × ( 10 - 7 ) =

12 - 33 × 3 =

12 - 99 = - 87