Question

URGENT!!!!!DAU COROANA ŞI MA ABONEZ!!!!! ESTE EX.3 PLZ AS VREA SI CU REZOLVARE!!!!!!

Answer 1

(a+a+2+a+4+a+6+a+8+a+10){nr. pare consecutive}-(a+1+a+3+a+5+a+7+a+9){nr. impare consecutive}=375
(6a+30)-(5a+25)=375
6a+30-5a-25=375
a=375-30+25
a= 345+25
a=370
Numerele cautate sunt:370,372,374,376,378 si 380.

Answer 2

a,a+2,a+4,a+6,a+8,a+10-numerele pare consecutive
a+1,a+3,a+5,a+7,a+9-numerele impare.
(a+a+2+a+4+a+6+a+8+a+10)-(a+1+a+3+a+5+a+7+a+9)=375
(6a+30)-(5a+25)=375
6a+30-5a-25=375
a+5=375
a=375-5=370
a+2=370+2=372
a+4=370+4=374
a+6=370+6=376
a+8=370+8=378
a+10=370+10=380.