Question

(89+11):(99-89):(28:7×3:6+8)×(5×8:10:2)×5=

Answer 1

Răspuns:

Explicație pas cu pas:

( 89 + 11 ) : ( 99 - 89) : ( 28 : 7 × 3 : 6 + 8 ) × ( 5 × 8 : 10 : 2 ) × 5 = 10

= 100 : 10 : ( 4 × 3 : 6 + 8 ) × ( 40 : 10 : 2 ) × 5 =

= 10 : ( 12 : 6 + 8 ) × ( 4 : 2 ) × 5 =

= 10 : ( 2 + 8 ) × 2 × 5 =  ( inmultirea e comutativa, dar si asociativa)

= 10 : 10 × 10 =

= 1 × 10 =

= 10

Answer 2

(89+11):(99-89):(28:7×3:6+8)×(5×8:10:2)×5=

100:10:10×2×5

10:10×2×5

1×2×5

2×5

10