1)
(х-27)+35=81
х-27=81-35
х-27=46
х=46+27
х=73
===================
2)
659-(345-х)=427
345-х=659-427
345-х=232
х=345-232
х=113
===================
1369,9631,3169,3196,1396,9613,6913,6931,6319,1036,1039,1063,1036,1069,1096,3016,3019,3061,3091,3096,3016,3061,3091,3019,6013,6031,6019,6091,6036,6063,6093,6039,9013,9031,9061,9016,9036,9063,9000,3000,1000,6000,6666,3333,1111,9999,6661,6663,6669,6611,6613,6616,6619,6631,6633,6699,6639,6693,613