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AlexïaCamelïa2004
a fost răspuns

Calculati:
a) -7-[-3+(-10)-(-2+1)]+5 b) -[31+(21-5)+14]-(11+2)

Răspuns :

a) -7-[-3+(-10)-(-2+1)]+5=
-7-[-3-10-(-1)]+5= -7-[-13+1]+5=
-7-(-12)+5=
-7+12+5=
5+5=10

b) -[31+(21-5)+14]-(11+2)=
-[31+16+14]-13=
-61-13=
-74


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