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DaNeLuT
a fost răspuns

Ex 2

11-[-1+3-(-3+15)-7]=
b) -15+{-1+[7-(+14-3)]-7}=

Ex 3


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


EX 4

(-5+10)-[-(-3+2)+(-7)]-(-14+5)=
b) 5-[17-(2+5)-(-7+15)]-(4-11)=

E URGENT!!!! VA ROG TERMINATI CAT MAI REPEDE!!!! URGENT!!!! DAU COROANA CARE TERMInA PRIMU!!!!!!!!!!!!

Răspuns :

Denisee11
2.)a)11-[-1+3-(-3+15)-7]=
=11-(-1+3-12)-7=
=11+10-7=
=14
b)-15+{-1+[7-(+14-3)]-7}=
=-15+[-1+(7-11)-7]=
=-15+[-1+(-4)-7]=
=-15+(-1-4-7)=
=-15-12=
=-27
3.)a)-7-[-3+(10)-(-2+1)]+5=
=-7-[-3+10-(-1)]+5=
=-7-(-3+10+1)+5=
=-7-8+5=
=-10
b)-[-31+(-21-5)+14]-(-11+2)=
=-(-31-26+14)-(-9)=
=-(-43)+9=
=52
4.)a)(-5+10)-[-(-3+2)+(-7)]-(-14+5)=
=5-[(-1)+(-7)]-(-14+5)=
=5-(-1-7)-(-9)=
=5-(-8)+9=
=5+8+9=
=22
b)5-[17-(2+5)-(-7+15)]-(4-11)=
=5-(17-7-8)-(-7)=
=5-2+7=
=10.
Sper că te-am ajutat!

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