Răspunsuri

  • Utilizator Brainly
2014-08-20T13:22:24+03:00
9x 5(1+2+3+....+40):41=

9x 5(1+40)x40/2 :41=

9 x 5 x41x20 :41=

9x5 x20=

45x20= 900-este pp

30²=900