(х-39+48)-(31-4)-(11-4+31)=48
х-39+48-31+4-11+4-31=48
х+9-31+4-11+4-31=48
х-2-31+4+4-31=48
х-2-62+8=48
х-56=48
х=48+56
х=104
(х-39+48)-(31-4)-(11-4+31)=48
х-39+48-31+4-11+4-31=48
х+9-31+4-11+4-31=48
х-2-31+4+4-31=48
х-2-62+8=48
х-56=48
х=48+56
х=104