Question

dau coroana! ESTE EXTREM DE URGENT!

Answer 1

1)a+a+1+a+2+a+3+a+4=a+46

5a-a=46-10

4a=36

a=9

Verificare

9+10+11+12+13=9+46

55=55

2) a-40=a : 9

9 * (a-40) = a

9a-360=a

8a = 360

a = 45

Verificare 45-40 = 45 :9

5=5

Answer 2

35. n = primul numar

n+n+1+n+2+n+3+n+4 =46+n ; 4n = 46-10 = 36 ; n = 36/4 = 9 ;

numerele sunt 9, 10, 11, 12, 13

36. n-40 = n/9, numitor comun 9

9(n-40) = n ;  9n-360 = n ; 8n =360 ; n = 360/8 = 45