Question

12. Rezultatul calculului 3 x 3 + {9. [6 - (8 + 2 x 6): 5] -8} : 10 este: a, alt răspuns; b.9; c. 1; d. 10.​

Answer 1

Răspuns: $\bf \red{\underline{10}}$

Explicație pas cu pas:

$\bf 3\cdot3 + \{9\cdot [6 - (8 + 2 \cdot 6): 5] -8\} : 10 =$

$\bf 3\cdot3 + \{9\cdot [6 - (8 + 12): 5] -8\} : 10 =$

$\bf 3\cdot3 + [9\cdot (6 - 20: 5) -8] : 10 =$

$\bf 9 + [9\cdot (6 - 4) -8] : 10 =$

$\bf 9 + (9\cdot 2 -8) : 10 =$

$\bf 9 + (18 -8) : 10 =$

$\bf 9 + 10 : 10 =$

$\bf 9 + 1= \red{\underline{10}}$

Varianta d)

Answer 2

3 x 3 + {9. [6 - (8 +2 x 6): 5] -8} :10 = 9+[9·(6-20:5)-8]:10=

=9+(9·2-8):10=9+1=10