Question

Culegere ex. 212 pag. 41​

Answer 1

Răspuns:

a) ( 13 × 2) + ( 13 × 3) + (13 × 1 ) = 13 × ( 2 + 3 + 1 )

= 13 × 6

= 78

b) (15 ×1) + (15×2) + (15×3) = 15 × ( 1 + 2 + 3)

= 15 × 6

= 90

c) (14×2) +(14×3) +( 14×2) = 14 × ( 2 + 3 + 2 )

= 14 × 7

= 98