Question

Dau coroana:205-55÷{28-23÷[13-6•(4-2•×)]}=194

Answer 1

205-55:{28-23:[13-6*(4-2*x)]}=194
205-55:'{28-23:[13-24+12x]}=194
-55:{28-23:[-11+12x]}=194-205
28-23:[-11+12x]=-55:(-11)
-23:[-11+12x=5-28
-11+12x=-23:(-23)
12x=1+11
x=12/12
x=1

Answer 2

55:{28-23:[13-6X(4-2X)]}=205-194=11
28-23:[13-6X(4-2x)]=55:11=5
23:[13-6x(4-2x)]=28-5=23
13-6x(4-2x)]=23x23=529
6x(4-2x)=13-529=-516
4-2x=-516:6=-86
-2x=-86-4=-90
x=-90:2
x=-45