Question

28:{2*[3*(4x-5)+1]+4}=2

Answer 1

notam paranteza {...} cu z
28:z=2
z=14
2*[3*(4x-5)+1]+4=14
notam paranteza [...] cu y
2y+4=14
2y=10; y=5
3*(4x-5)+1=5
notam paranteza (...) cu n
3*n+1=5
3n=4
n=4:3
4x-5=4:3
4x= 4/3+5
4x=4/3+15/3
4x=19/3
x=19/12