Question

Ma ajutati si pe mine la niste exercitii?

1) (6+12+18+...+60):(3+6+9+...+30)=
2) Ce rest putem obtine dace impartim un numar natural la 4?
3) Aflatil pe x din egalitatile:
a)162-3x=48
b)4*x+6*x+2*x=60
c) (x-7):5=8
d)7+3*[2+5*(4+2x)]=313

Answer 1

1) (60-6)/6+1= 54/6+1=9+1=10

(6+60)*10/2=66*10/2=660/2=330 ( prima paranteza)

(30-3)/3+1=27/3+1=9+1=10

(3+30)*10/2=33*10/2=330/2=165 ( a doua paranteza)

330/165=2 

Suma lui Gauss