4*х-((7000-4647)-1522)=77
4x - (2353 - 1522) = 77 4x - 831 = 77 4x = 908 x = 908 / 4 x = 227
4x-(2353-1522)=71 4x-831=71 4x=71+831 4x=902 x=902:4 x=225.5
ошибка 4х=908
х=908:4
х=227