AFLA NUMARUL NECUNOSCUT; a) (8+a):6=8 ; b) (b-466):2=30 ;c) 9x(c+8)=90

Răspuns :

a)

( 8 + a ) : 6 = 8

8 + a = 6 × 8

8 + a = 48

a = 48 - 8

a = 40

b)

( b - 466 ) : 2 = 30

b - 466 = 2 × 30

b - 466 = 60

b = 466 + 60

b = 526

c)

9 × ( c + 8 ) = 90

c + 8 = 90 : 9

c + 8 = 10

c = 10 - 8

c = 2

SPER CĂ TE-AM AJUTAT!

(8+a): 6 = 8 => 8+a = 8 x 6 => a = 48-8 => a = 40

(b-466):2 = 30 => b-466 = 30 x 2 => b = 466+60 => b = 526

9x(c+8) = 90 <=> c+8 = 90:9 <=> c = 10-8 => c = 2