Salut! :)
x = ( - 29 + 35 ) × [ ( - 7 ) × ( + 6 ) - ( - 5 )( + 7 ) - ( - 24 ) : ( + 4 ) ]
x = 6 × ( - 42 + 35 + 6 )
x = 6 × ( - 7 + 6 )
x = 6 × ( - 1 ) = - 6
y = ( - 21 + 27 )[ ( - 4 )( - 16 ) + ( - 14 )( + 5 ) - ( - 48 ) : ( + 6 )]
y = 6 × ( 64 - 70 + 8 )
y = 6 × ( - 6 + 8 )
y = 6 × 2 = 12
z = ( - 3 )[ ( - 24 ) : ( + 3 ) + ( - 72 ) : ( + 9 ) - ( - 15 ) : ( + 3 )]
z = ( - 3 )( - 8 - 8 + 5 )
z = ( - 3 )( - 16 + 5 )
z = ( - 3 )( - 11 ) = 33
t = [ ( - 32 ) : ( - 8 )( + 4 ) - ( - 27 ) : ( + 3 )( - 2 )] : [( - 50 ) + ( - 8 )( - 6 )]
t = [ 4 × ( + 4 ) + 9 × ( - 2 )] : ( - 50 + 48 )
t = ( 16 - 18 ) : ( - 2 )
t = - 2 : ( - 2 ) = 1
y/x = 12/( - 6 ) = - 2
t - z = 1 - 33 = - 32
