Question

Rezolvati ecuatia: 
{ 2 x [ 14 + ( 5+x) :6 ] - 5 } :9 +7 = 10 

Answer 1

Răspuns:  x = 7

Explicație pas cu pas:

{ 2 x [ 14 + ( 5+x) :6 ] - 5 } : 9 +7 = 10

{ 2 x [ 14 + ( 5+x) :6 ] - 5 } : 9 = 10 - 7

{ 2 x [ 14 + ( 5+x) :6 ] - 5 } : 9 = 3

2 x [ 14 + ( 5+x) :6 ] - 5 = 3 × 9

2 x [ 14 + ( 5+x) :6 ] - 5 = 27

2 x [ 14 + ( 5+x) :6 ] = 27 + 5

2 x [ 14 + ( 5+x) :6 ] = 32

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

14 + ( 5+x) : 6 = 16

( 5+x) : 6 = 16 - 14

( 5+x) : 6 = 2

5 + x = 2×6

5 + x = 12

x = 12 - 5

x = 7