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4-3-{5+[6-7-(3-5+9)+(3-7)]}

Răspuns :

CarMina03ask

Răspuns:

8

Explicație pas cu pas:

4-3-{5+[6-7-(3-5+9)+(3-7)]}=

4-3-{5+[6-7-(-2+9)+(-4)]}=

4-3-{5+[6-7-7+(-4)]}=

4-3-[5+(6-7-7-4)]=

4-3-[5+(-1-7-4)]=

4-3-[5+(-8-4)]=

4-3-[5+(-12)]=

4-3-(5-12)=

4-3-(-7)=

4-3+7

1+7=

8

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