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IHateMorning
a fost răspuns

Efectuati:

a) -7-(x+14)-(273-9+381)-(-645-x-20)= ?


b) 17+(x-4)-(-7+5+x)+(-2+14)-(-4+30)= ?


(DAU CORONITA) (30 PUNCTE)

Răspuns :

-7-x-14-273+9-381+645+x+20 = -1

17+x-4+7-5-x-2+14+4-30= 1

Triunghiu
a) -7-(x+14)-(273-9+381)-(-645-x-20)= 
-7-x-14-273+9-381+645+x+20=
- 675+674= - 1

b) 17+(x-4)-(-7+5+x)+(-2+14)-(-4+30)=
17+x-4+7-5-x-2+14+4-30=
+42 - 41= +1

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