Question

Aflati x din
{4×[(3+x):9+7]-30}×2-12=1768

Answer 1

{4x[(3+x):9+7]-30}x2-12=1768
{4x[(3+x):9+7]-30}x2=1768+12
{4x[(3+x):9+7]-30}=1780:2
{4x[(3+x):9+7]-30}=890
4x[(3+x):9+7]=890+30
[(3+x):9+7]=920:4

(3+x):9=230-7
3+x=223x9
3+x=2007
x=2007-3=2004