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11+2•[3+(4+5•6):2]:5-7


Răspuns :

11+2×[3+(4+5×6 ) :2]:5-7=

11+2×[3+(4+30 ) :2]:5-7=

11+2×(3+34:2):5-7=

11+2×( 3+17 ) :5-7=

11+2×20:5-7=

11+40:5-7=

11+8-7=

19-7=12

Răspuns:

12

Explicație pas cu pas:

11+2×[3+(4+5×6):2]:5-7=

11+2×[3+(4+30):2]:5-7=

11+2×(3+34:2):5-7=

11+2×(3+17):5-7=

11+2×20:5-7=

11+40:5-7=

11+8-7=

19-7=

12