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6-5:[4-3:(2-2:b)]=1​

Răspuns :

5:[4-3:(2-2:b)]=6-1

5:[4-3:(2-2:b)]=5

4-3:(2-2:b)=5:5

4-3:(2-2:b)=1

3:(2-2:b)=4-1

3:(2-2:b)=3

2-2:b=3:3

2-2:b=1

2:b=2-1

2:b=1

b=2:1

b=2

6 - 5 : [ 4 - 3 : ( 2 - 2 : b ) ] = 1

5 : [ 4 - 3 : ( 2 - 2 : b ) ] = 6 - 1

5 : [ 4 - 3 : ( 2 - 2 : b ) ] = 5

[ 4 - 3 : ( 2 - 2 : b ) ] = 5 : 5

[ 4 - 3 : ( 2 - 2 : b ) ] = 1

[ 3 : ( 2 - 2 : b ) ] = 4 - 1

[ 3 : ( 2 - 2 : b ) ] = 3

2 - 2 : b = 3 : 3

2 - 2 : b = 1

2 : b = 2 - 1

2 : b = 1

b = 2 : 1

b = 2