Question

2x[14+(5+a):6]:8+7=11​

Answer 1

Răspuns: a = 7

Explicație pas cu pas:

2 × [ 14 + ( 5 + a ): 6] : 8 + 7 = 11

2 × [ 14 + ( 5 + a ) : 6] : 8 = 11 - 7

2 × [ 14 + ( 5 + a ) : 6] : 8 = 4

2 × [ 14 + ( 5 + a ) : 6] = 4 × 8

2 × [ 14 + ( 5 + a ) : 6] = 32

14 + ( 5 + a ) : 6 = 32 : 2

14 + ( 5 + a ) : 6 = 16

( 5 + a ) : 6 = 16 - 14

( 5 + a ) : 6 = 2

5 + a = 2 × 6

5 + a = 12

a = 12 - 5

a = 7 → numarul, aflat prin metoda mersului invers