Question

Calculează, respectând ordinea operatiilor si semnificatia parantezelor.
a) 8 (8 +2) + 36:4 D] (57-6x 7)3:9+25 C 4 (25 - 10x 2) + 6x (32:8)​

Answer 1

Salut.

Punctul a)

8 × (8 + 2) + 36 ÷ 4 =

= 8 × 10 + 9

= 80 + 9

$\boxed{=89}$

Punctul b)

(57 - 6 × 7) × 3 ÷ 9 + 25 =

= (57 - 42) × 3 ÷ 9 + 25

= 15 × 3 ÷ 9 + 25

= 45 ÷ 9 + 25

= 5 + 25

$\boxed{=30}$

Punctul c)

4 × (25 - 10 × 2) + 6 × (32 ÷ 8) =

= 4 × (25 - 20) + 6 × 4

= 4 × 5 + 24

= 20 + 24

$\boxed{=44}$

- Lumberjack25

Answer 2

Răspuns:

a) 8 (8 +2) + 36:4 = 8 x10 +9= 80 +9 = 89

b) (57-6x7)x 3:9+25=(57-42) x 3:9+25=15x 3:9+25=45:9 +25= 5+25=30

c) 4x(25-10x2) + 6x (32:8)​ = 4x(25-20)+6x4= 4x5+24=20+24=44