{[(x-49):4+2]•4+12}:4=125
[(x/4-49/4+2(amplificam cu 4)•4+12]:4=125
[(x-49+8/4)•4+12]:4=125
[(x-49+8)+12]:4=125
(x-49+8+12):4=125
(x-49+20):4=125
(x-29) /4=125|•4
x-29=500
x=500+29
x=529
