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a fost răspuns

am nevoie de 5 exerciti cu paranteze rotunde si patrate dau 30 puncte va rog asjutati-ma fara impartire 



Răspuns :

3+[5+(7+3)]
7+[7+(2+1)]
10+[5+(4+1]
10*[6+(2+2]
200+[10+(5+5]

120-[30•2+(60-20:10)]=

120-[60+(60-2)]=

120-(60+58)=

120-118=

2

[20+(30-10)]×2=

(20+20)×2=

40×2=

80

[(30÷3-2)+10]×2=

[(10-2)+10]×2=

(8+10)×2=

18×2=

36

5×[2+1+(56-6)]×2=

5×(3+50)×2=

5×53×2=

265×2=

530

[(70-50:5)+3]×2=

[(70-10)+3]×2=

(60+3)×2=

63×2=

126