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-4-7:(-3-4)=
8-(1-7):(-3+6)


Răspuns :

-4-7:(-3-4)=
-4-7:-7=1
-4+1=-3
8-(1-7):(-3+6)=
8-6:-3=
8+2=10
-4-7:(-3-4)=-4-7:(-7)=-4+1=-3

8-(1-7):(-3+6)=8-(-6):3=8+6:3=8+2=10