Răspuns :
x-(x:4)= x) |__|__|__|__| -(minus)
=4x-x 1/4(x)|__|
=3x......=>3x=27 -----------------------------------------
3x=27....=> 27:3=9
x=9*4
x=36
36-(36:4)=
=36-9
=27
R=>36
=4x-x 1/4(x)|__|
=3x......=>3x=27 -----------------------------------------
3x=27....=> 27:3=9
x=9*4
x=36
36-(36:4)=
=36-9
=27
R=>36